My colleagues always ask about me, how should I deal with it?

It shows that you are kind-hearted and keep your privacy to your friends. If you are asked again next time, you can tell her in a self-deprecating tone: I am not worth so many things. What do you care about? Tell me about it. In this way, she will worry less about you, and she should have a neutral attitude towards friends like you, and cannot be taken advantage of by her "good intentions". Let her know that you are self-aware.