divination is a good idea if you think she likes you. i posted a flame divination online, just be sure to clear your mind and focus on one question. also, be sure there are no open windows, no fans on, or anything that could effect the candle flames movement.
if you're casting on someone it will manipulate them in some way. there are spells you can cast when you wish to attract love into your life, but you do not visualize or think of a person you already know. once you include them, the spell is being cast on them.