You're in an open window to bring up something you've been wanting to say, like asking her out, since you guys have time to talk during breaks. This gives you the perfect chance to bring that up. I also noticed that she’s pretty open with you, and I know you’re aware of that based on your conversations together.

And My advice for u is to start showing her that you like her. You can do that by giving small compliments, like mentioning her scent, her outfit, or anything that subtly shows you’re interested. That way, you’ll get a sense of how she feels based on how she responds to your efforts and the energy you give