Does she like me?????

ok so i always wind up going to the supermarket aftercl on tuesday at 10-11 pm. i always wind up going to the same cashier for obvious reasons. anyway im 19 years old, and every time i go to her she starts chatting me up like im her best friend. ive been to her maybe 6 times, and she tells me how shes planning on returning to school, asks me how im doing in school. i told her i am taking a steady cl loadto not burden myself and i said that i wont be out of their for 3 years lol she said that she wont either and we will be their for 3 years together/ blah blah blah. she even told me that she was going to some funded trip to israel and i said cool i im jewish also, and she told me i should come along as well lol. shes 19 too. anyway. ive never had a gf before so my confidence is **** so i had trouble making the first move. so what i did w i gave her my email address and told her to email me the trip details on the israel excursion she will be going on so i can look into it. I figured she would email me but. i gave her my email at 10 pm on wednesday and its 1pm friday so thats 2 days of no email im starting to think maybe she doesnt like em but ifind it odd how casual she talks to me its very strange..