Hey Joy,
Your welcome.... this is my guilty addiction PC
Your Daughter needs to learn and understand you will not tolerate her attitude. Deep down your Daughter loves you, she is just having a hard time understanding herself and her mood let alone understanding her Mum.
I would keep your normal contact with her and if this continues seriously have a word about your Daughter's attitude. Think someone on one of your other posts said to maybe ask her Doctor's about ways in which you can approach her.
Its not easy being a parent of someone ill and it isn't easy being the person who is ill and in major denial
You will get there though.... remember that