I'm just not sure about this ~ it could go either way.
She might feel happier that people care; or she might be feeling depressed and not in the mood for partying ~ and even a bit upset that you have been talking about her, and her problems, to other people.
I just don't know how it will go ~ I hope, though, that it will be successful.
How to prove that you care?
Just by being there for her, no matter what, and by having no expectations and making no demands.