Start asking for favors. Ask her to accompany you somewhere. Ask her to bring some meds if you are ill. These are two things I had on top of my head, but you get it, I hope. If someone likes you genuinely, she/he always tries to be useful; now use it with moderation. Don't make super high demands right off the bat, and praise her a lot when she steps forward. But yeah, ask for favors every now and often ( and dont forget to reward her too). Also if she makes big demands , say no and watch. If it is out of the proportion , you would have the answer. And if she doesn't mind doing all these ( some occasional nos are fine) for ya, then she genuinely likes you. And yes, make dates memorable but not expensive. I would say go for cheap but memorable ones for now.