Maybe she has a problem with dealing with the illness. She might have gone through something in her past with an illness.....sometimes when they have had a traumatic experience like that, they may be afraid to allow themselves back into being that close with someone who they think they will loose????

They think they are protecting themselves from the loss & knowing how much of themselves they put into a past experience.....maybe she is afraid to go through that again.....even though in reality...it may not be anything like her last experience.

I am just providing a possibility....not saying that this is the case either.....but just something to think about.....giving her the benifit of the doubt.

There is usually a reason who someone cuts off a relationship....& it isn't usually to be mean when that other someone is ill.

Maybe if you could talk to her....but then again...maybe it isn't something she even realizes is happening.......

Don't sound like it is even about keeping relationships to me.....don't judge to harshly at first glance,
Debbie