Missing grandson

My od has met the most selfish man and moved in with him.she has stopped me seeing my gs.we have never argued but since October when she started seeing him she has turned in to someone I don't like.she had my gs six years ago and has lived at home till two months ago when she met this man she was spending all her time with him leaving my gs at home her days off and spare evenings my gs was upset by this but she did not care.i was told last year that I had severe emphysema and chronic bronchitis.she has seen my scans but has said to my hb that I am not as bad as what I make out.if I ask her for a hand when she has a day off she says her bf needs her.the last time she said her bf needed her I lost my temper and said what about my gs he needs you.i did everything for him I love him but she is his mum.anyway while I was shouting at her she was putting her finger to her head doing the mad sign I told her her bf can't be a good person demanding she spent all her time with him and not my gs.i told her I would not look after my gs when she was not working because i was helping her hurt my gs.the next minute she attacked me in front of my husband she would not let go of my hair she was on top of me I am to ill to fight back and was worried about my gs.her bf appears at the front door and said this is not on in front of my gs I told him it was because of him this had happened he looked at me and smirked.she went with him and took my gs next evening she text ms and said she wanted to get her clothes I said she would have to wait I was so sore I just could not face her.the next day the police came and said she wanted me charged for attacking her!she had recorded me shouting at her I broke down crying I gave the police my gs clothes and I told them I wanted her charged so she dropped her demands.my husband went to see her because we were lost without my gs.she told him I attacked her but my husband said he saw what happened she still would not tell the truth because we were both missing our gs he left it.she came to my house with my gs and even told me I attacked her I told her I never but she said I did and played me the tape of me shouting I kept quiet because I wanted to see my gs.a couple of weeks later she came here crying that her bf had lost his temper with her I know I am mad but I told her to come home she half hearted admitted she attacked me and I did not push her because she was upset and I got my grandson back.i was looking after my gs six days a week and she was having him there one day she has two days off but wanted one day for just her and her bf.anyway I went to her house and on a number of occasions with my gs and his things had been smashed on the floor it was not my gs because he was with me and she said her bf had lost his temper i asked her if he was going to replace them and she said he has not got the money he works days full time so I just kept quiet.a few weeks ago I asked her if I could take my gs on holiday this year like I do every year she usually comes as well but she said she had no money.she then booked a holiday to the same place but a few days later so she would spend 10 days there with us and five days her and her bf after we had gone home.my gs was having a great time till they turned up.her bf said to me act like we are not here because we are not supposed to be here!they were spending two hour a day at our hotel pool.we went for a meal one night with them when we wanted to go back to our hotel my gs asked if he could stay in town with them and her bf said no we are not supposed to be here my gs was crying so her bf grabbed my daughter's hand and walked away while my gs was screaming crying my heart was breaking for him and she did not even look back.when it was time for us to go home I had asked them to spend a couple of hours with my gs before the coach came two hours before my gs started phoning them they did not answers the phone 30minutes before the coach turned up again.my gs cried all the way to the airport.i was going to get them from the airport when they came home and her bf had kept repeating to my gs that he did not want him coming to the airport to pick him up.anyway they phoned up the day before and again he was shouting in the background he did not want my gs to come so I told them to walk I had had enough of seeing my gs so hurt.she told me to have my gs ready because they were going to collect him and I was not to see him again I asked her to give me my camera when she got here.she turned up and she had left her bf car keys here.my hb asked for my camera and he would give her the keys she refused and called the police.she spent a while talking with them and they asked for his keys I said she had my camera they got my camera and I gave them the keys I said why couldn't she do that.i have never had the police at my house before all this.this was three weeks ago and I have not heard from her my heart is breaking not seeing my gs I have spent every day with him since he was born.does anybody know can I get a court to grant me access to my gs because I know he will be missing us.i don't know my daughter anymore I have never smacked her and I am worried she is going to hurt my gs.she is ,28 and her bf is 44.by looking after my gs I mean six days 24 hours a day because she works nights.