Hi. My gut feeling is to say don’t do it, unless you have plenty of space and can afford to employ carers round the clock for your mum - your mum is likely to get very little help from statuatory agencies if she is living with two able bodied younger adults.
I’ve just read your earlier post about Christmas. Did your mum come to stay? How did that go? You have two young daughters who must come first. If your mum moves in, who will do the caring? Will you still be able to work? It sounds as though her PD is pretty advanced with hallucinations etc and your children are likely to find this very difficult to cope with at a time when their needs should come first. Is it possible for your mum to live nearer but not with you?
A lot to think about but been there, done that, with my FIL 30 years ago and would not put my children through that if I could rewind the clock. Almost broke up my marriage too and we have a strong relationship.
Best wishes whatever you decide, not easy.