Does she like me now?

alright so I was playing 20 questions with this girl that I like. I asked her if she has ever liked me and she replies "hmmm:)". so a little bit later she goes well idk if I like you and I don't want to make things awkward between us because I just don't know. that was a couple weeks ago. well our highschool is having a sadies coming up soon and she asked me to it. does this mean that she likes me? (btw we're juniors in highschool)