Do you think she will say yes tomorrow?? How to ask her out?

You have this girl in the bag. Holding eye contact, going out of her way to talk to you, wanting to be closer to you, and playing with her hair? All signs, my friend, especially the hair, it's a natural thing girls do when they are talking to or even near a guy they're attracted to. She's subconsciously grooming herself to look better for you. What you gave for asking her out sounds perfect! Go for it, and good luck!