I am sorry you have to go through this. Hope your mother fully wakes up.
You may help her by talking about the parable of the good Samaritan. You know the Jews were supposed to shun the Samaritans but Jesus used the Samaritan as an example of a good neighbor. The priest and the Levite didn't bother to help the man who was robbed and beaten, but it was the Samaritan that went above and beyond the call of duty. So who was the better person?
Also, the Samaritan woman was the first person Jesus identified himself to as the Messiah. Ask her to think about that.
JW's do not follow Jesus' example of not shunning anyone.