..it might show even in little things that she likes you..a mere check on how you are doing or a casual text message that she cares..
..however, there are certain instances when she does that because she just likes you and has no real intention of bringing the connection to a higher level..the best thing to do (in my opinion) is to ask her simply and directly, and if she is like me, then she will give you a direct and simple answer, too..there is no need for any signs or stuff really..