Karen
You are right ..either she needs to be in hospital or have someone with her. You live in Canada ,will social services provide her with a carer if she refuses to come to your house? Has she started any treatments yet? I just realised you have posted elsewhere about her haven`t you?
Maybe its time to get tough and insist she comes home with you , there will come a time when her stubborness is just too hard for the rest of the family to deal with. I feel for you, I have an 80 year old mother and father who are so stubborn they drive me crazy..and they live 3000 miles away!
Take care.
Marica