@Aren't they cool? I suggest having a conversation with her about this. I wouldn't pressure her to share stuff but make sure she's not alone and is aware that you're there for her. If she's the type of friend who complains a lot and when you give them advice they always ignore it then I suggest stop giving advice and maybe taking some time for yourself because it can be very draining giving constant advice and help and having it thrown through the window. But before all this I do strongly recommend talking to her about it because if she is a good friend she'll listen and you guys can handle this maturely.