Sit next to her and observe which question she is stuck in. Then let's talk in the name of explanation. If she can't and neither can you, what's the point? Learn by yourself. But you can also try to find a question that she knows, tell her that you can't, and ask for an explanation.

However, the latter situation is more embarrassing.

Then there is nothing to talk about. When she finishes learning, she will strike up a conversation directly when she leaves. For example, if you see what she is studying, ask her if she is majoring in XXX. Then ask some professional-related questions and add WeChat.

If you can't find it, it is recommended to cultivate your social skills first.