Okay, first off, what we reached in the past two threads. 
-I'm 15, in highschool. She's 16, in same highschool. I'm having some family troubles (read previously). I like her a lot, we kinda connect, have EXACTLY the same interests. I think she's hot. 
She's the one on the right.
This is me (I suck at pictures). 
Okay, so you guys told me to ask her out. Watch a movie, go to the cinema, go to a bar, drink some coffee, whatever. Clue to last night: 
Me (after we played an online game): We should do something together sometime. 
Her: Really? We should? 
Her: Why? 
Me: Just because. 
Her: Why do you want to do stuff with me instead of *InsertNameOfOtherFriendHere*?
Me: I dunno. Not everything has a reason. 
Her: Yes it does. 
Me: So, you wanna do something sometime? 
Her: We'll see.  
Okay, so what does she mean, and what should I do next? I really suck at this, but I want it to work. At the very least I don't want her to hate me. 
Help?