everything you did was awesome, well played.
Personally id of stayed a little longer, maybe tried to get some information from her, things such as: if you wore a ring, what finger? Or if you werewearing a ring give it to her and ask her to put it on whatever finger, and then run more of the routine.
After that id of gone for a number, and then asked for directions to the clothes store again, maybe even said something along the lines of
"im going where? maybe you should take me, coz your directions are a little confusing"
something like that, making sure she knew you were joking about her directions, then you could of gone into numerous routines on the way, aswell as just general chat.
If you see her again definately get a number, and try out something like the cube, or a similar ESP routine, she seems to love that stuff
good luck
