A girl I quite like suddenly lost her temper with me, and she was fine a few days ago!

Sometimes, people's moods and emotions may change for various reasons. Here are some possible reasons:

1. Stress: She may have encountered any difficulties or pressures in her life, which led to emotional instability.

2. Communication problem: Maybe you said something that might touch her sensitive topic or cause misunderstanding.

3. Situational factors: Maybe she is just in a bad mood under certain circumstances, not for personal reasons.

4. Self-problems: Some people may be unfriendly sometimes because of their own emotional or personality problems.

Whatever the reason, the most important thing is to understand her emotions and feelings through communication. Try to talk to her in a peaceful and respectful environment and listen to her thoughts and feelings. Here are some suggestions that may be useful:

1. Find a suitable time and place: choose a time that won't disturb her and a place that makes her feel comfortable.

2. Communicate calmly: Keep calm and don't argue with her when she is in high spirits. Try to understand her position, not just defend herself.

3. Listen: Give her a chance to explain why she lost her temper with you and listen carefully to her reaction.

4. Express understanding: Express that you understand her emotions and tell her that you are willing to help her solve the problem.

5. Respect her space: If she needs some time to calm down, respect her decision and give her some space.

6. Give time and space: People sometimes just need a little time and space to deal with their emotions and feelings. Don't force her to respond to you, give her some time and space to deal with her own affairs.

I hope these suggestions are helpful to you.