I think that is a very good approach. Tough love!!!
She needs to learn also that the world will not end. Yes, she feels like hers did but it didn't for everyone. It may be good for her.
I apologize for not replying sooner but I have had some very trying times with my mother. She's been back and forth to the hospital and no one knows what's wrong with her. I can't believe this is happening. I am 5 states away and it's been really hard.
You should keep up the good work that you are doing and know that "Because life isn't perfect,we have to make the best we can". You are a blessing to her and she will realize it sooner or later. I'm sure she already does.
I will try and check up on this thread soon to see how you are. Sorry again that I responded so late.