She is busy with her own troubles. But that doesn't mean that she didn't hear you. Seems that her mind is fully preoccupied with hers . So don't take it into ur heart. This may be case one. Case two may be she is not bothered abt others problems because she is busy with her problem. She focuses on her welfare. So if things are not coming positively she expresses her frustration. so every other thing remains secondary for her. So these are the two possibilities in her mind. But she has helped you in past. Now situations might have changed her a Lil bit. So try to work and focus on ur own problem and prioritize urs to make it positive. Focus on you first. If u make urself a priority everything comes secondary. This is not selfishness but it's an effort to make ourselves better in mind in life. Read my infertility journey and read how I suffered. That will motivate u.