Every person needs support at least once in their life. To support a dear person means to share his or her feelings and emotions, to show that a person is not alone in the situation.
First of all, ask outright how exactly you can help the lady. Some people need to talk a lot, some prefer to remain silent, and some may ask a lot of questions that will be difficult to answer.
The main thing is to show your beloved person that you are always ready to support and that you are close.
Your lady should not be afraid to cry, show her real feelings, or talk about what happened. It will be good if you can show her that you can take her with sadness and in bad mood. Let her see that you appreciate and respect her susceptibleness. Let the girl feel that you are near. It will be pleasant for the woman to read your message in the morning and in the evening. It will be even appropriate to make a small but pleasant surprise for a dear person that can reflect your thoughts about her. Be sincere and empathetic and it will work! Your support is very important to your lady.