So , I think it would be good to look at the different aspects and work out what might be helpful and what would not. Firstly, we all struggle with a move, whether we have chosen it ourselves or not. We get very stressed and anxious about many things, and I think that as we get older, routines are often cheering and help us to relax. We are the people we have always been but maybe with less strength and find things an effort. It is extremely exasparating to be unable to get things put where you want etc, so that frustration can turn to anger and you can start ranting as no one is paying attention to y our situation and you could scream for annoyance. I am now 80 and have to begrudginly admit to myself that though I can drive with the same ability as previously, changing a wheel and even trying to get the nuts from a tyre when they have been tightened by manchine!!! So try to just coast through the next few weeks, dont try to explain or apologise too much, just deal with each situation as it arises.
Then the very important thing right now is that this is combined with your worries as to whether you have done the right thing, your embarrasment at her racist comments etc. You feel you must do the best for your mother. Well the most important thing you can do is to keep your health and strength, and dont allow her to take over your life. So go away on your holiday, tell your immature brother that he is responsible to keep in touch with her and only let you know if there is a sudden illness or whatever. Realize that having a good break and a rest is the best way you can then cope with the everyday routines. So do your best not to constantly think of her while you are away. I was given a good idea by a phycologist when I was in the middle of something similar, being the eldest child and feeling it was all on my shoulders. She said to take a specific time, not near bedtime, and often it is good to be doing something physical at the same time, so I tended to cook lunch whilst thing these things through. So whatever she says or does that worries and upsets you, when these thoughts come in your mind, tell yoursel firmly that now is not the time to think about it and you will concentrate at 12 noon or whatever. So you are not dismissing anything and you will take care in what you do, but by simply giving those thoughts a timetable, it should allow you to think of other things than this situation.
Then if possible have a concerted effort with your brother too, and firmly tell her if she makes either racist remarks or insults about staff etc, you will get up and go immediately. So you do not try and argue with her, but as you would a child you have set boundaries. to. If she has dementia she may not be able to understand the ruling well, but if these things happen, you simply collect your things, say nothing except Goodbye mother, and leave. So you are not escalating the upset for her or you, but you show your limits and simply going away denies her any change to continue to talk to you in an unpleasant way. If she is capable of rational thought she will soon realize that she cannot behave in this way and expect you to put up with it. You might just go away and then come back at the next time that yo usually do. However, if y ou feel she is aware of what she is doing and doing it delibarately then again get up and go and DONT go the next time she expects you. That way for each occasion you get a rest from seeing her, which can be good for you, and she is shown that she will not stir it or cause you any upset or you will just leave. NEVER argue the toss about it, just stick to your guns and carry on. If she then moans at you for not visiting one day, you just look at her and say, " Well that is entirely up to you of course!! Dont enter any further discussion, but stick to your guns. This can be a win/win situation. You have her now in a new place, where new patterns of behaviour and attitude are needed. You need to think what YOU nned in order to make your life bearable, then think things through and decide which days would suit you to visit, and notice if one day contains more things she doesnt like than others, Once you have worked out how to go on from your point of view, meet up in person with your brother. Inform him very calmly, without raising your voice or anything, that you will be away such and such a week and it is up to him to visit your mother and only get in touch with you for any serous illness. Then dont commit totally, but when you have had your holiday, you might say you are going to see your mother every other day or whatever, and that he is expected to cover the other days.
I am sure that you will feel calmer and more in control of your life by facing things and working out what you want to do, rather than being presented with a fete accompli,
I have moved 19 times as an adult and about 6 as a child. I have moved abroad, and once went out to Syria with a two year old, which was quite tough, I can assure you!! So if you try to change your mind set , and see that you have every right to work out what you can and cant do . Then you will not only feel more competent and relaxed, once you have made up your mind.
When you have made up your mind, the body language can often stop arguments, and when your mother sees that what she does, no longer causes upset and worry, she can stop playing games with you. No discussion is the name of the game and the minute she swears or is racist or does anything that she would not habe done if the ice cream van was there etv.
So do hope this gives you some ideas and do let me know what you decided to do. Remember"I am not my mothers keeper?". If she has been getting more obnoxvious then f neessary step oout for a vcouple of minutes and then calm down , help to get the broken Dont whatever you do let your brother make you feel more guilty or not take his share of things. If he doesnt help find and buy a new iron or whatever, if it is important and necessary , sort it out yourself , but announce that you have had to give up your spare time to do this and will not be available to visit on the following week as you need to catch up on things.
finally dont forget we are all here on gn's and will be rooting for you and reminding you that you do not have to do everything yourself and if your skiving brother thinks he is going to get off scot free, if you need to get someone in to do a special clean up or to put up shelves or whatever, present him with a bill to pay, and if he is niggardly add 10% on so that if he is not prepared to share the effort equally then he must pay his way.
Good luck with everything
Love GILLIAN