I think you should ask her out, not like a date but just to hang out, then maybe later on it wouldn't be as awkward when you tell her how you feel about her. You should slowly advance your relationship with her, give her a call once in a while (if you already do then it's koo) to just say hi, which shows that you are a nice caring person, but don't move too fast. Because when guys move too fast, to me it seems like they are not really the serious type.