You sound too exhausted to challenge them today. We don't know how you got to this point so any thoughts can only be generalised. Is there a friend close by you can talk to and perhaps escape to sometimes? I do think adult children have a tendency to turn into truculent teenagers at times and yes, expect Mum to do what she always has. Its time for an honest chat, yes you love them but you're exhausted and need them to pull their weight as any adult should. No, they aren't 'helping' they are adults sharing in the production of a meal or day to day chores if sharing your home. Perhaps get through today, have a chat with your partner, find out if he is as tired of it as you are today. Have a chat with your family when you aren't feeling so stressed, plan what you will say and stay calm if you can. If you ask for specifics and they don't happen then best have a clear plan about what happens next. Good luck, I hope venting has made a difference today. There's always someone here who will listen.