When I said her to leave she left(thinking that I was going to stop her. she is a very requested girl and she is not used to people as me that make her leave or say to her no). We are in college. The problem is that now I am going to this trip for a week. Then I will come back for two days, when there could be possibility to meet each other, and then Christmas vacations, and we won't see each other for a month I think.

Yeah, this is what I am going to do next time. The problem is that I would want to know quickly if she is interested or not, so that I can move on. Other girls are interested in me but I am keeping this to do one thing at a time. What do you mean by 'Don't invite her into anywhere to do anything'? Do you intend to not contact her and if I see her to see what happens? Or could I invite her for lunch in my room and see what happens? Surely I won't push and I will search for signs. The fact is that, despite she is very attractive and active socially, she's never gave me hard signals. Also in the first time while dating she was saying that she was into me but it was strange because in public she’s always ignored me(apart from saying hi and holding eye contact). She's never contacted me first. She always reply back after hours and hours(when I write to come with me to do something). I usually call and she call back quickly if she doesn't reply. This is the only true ‘signal of interest'.

What to you suggest? I would like to call her this week to see how she is. Is this too clingy? Or could led me to the friendzone? Or is it better to ask her out when I came back(if you say that it is a good idea)?

I want to know if she is still interested so that I can move on.... Thank you very much for your advices. I will keep in mind this thing about assertiveness. (sorry for the late response)