1. Listen to her feelings: Tell her that you fully understand her current emotions, and that no matter how complex they may be, you will patiently listen. Let her know that you are always a shoulder she can rely on when she needs you.
2. Express support and understanding: Tell her that you believe in her character and understand that friction in friendship is inevitable. Encourage her to believe in her own judgment and handling methods, while reminding her that everyone has different ideas and positions. Try to see things from the other person's perspective, and perhaps find a better way of communication.
3. Provide advice or divert attention: You can gently give her some advice, such as suggesting doing something she likes together to relax, or helping her analyze the reasons for conflicts, but remember to remain neutral and not overly biased towards either side. If she feels like she doesn't want to talk now, just do something happy with her and let time slowly heal everything. It is important to make her feel that your company and support are the strongest backing.