She answered with an "I don' know" this a surefire in my opinion that she actually would at least kiss you sir. She's just too afraid to admit it to you and herself. Being that you are younger it's still confusing to especially girls around 16-18. I'm older but I def remember. They can be picky about who they are gonna give it to. But they are literally right around the corner from being little hoe's. With exceptions to certain girls.....rarely. But you got the ioi's my dude, you said it yourself.
Although this could have been a big misunderstanding, you could....have made a quick move. Mystery also has once said that you could respond with "I didn't say you COULD, it just looked like you had something on your mind." or I would have dropped on her "I bet that's why your other "boyfriends" didn't work out." I've done it and it always works like a charm. You don't want there to be a chance for a weird moment, DEFLECT. She was a bad girl, punish her.
Finally, boom dude! She hit you up. Missing you and Sh1t. Don't waste any time, pull the trigger....again so to speak. Don't rush in or anything, make her work a bit to get you to hang with her since she wants to so bad now. Make it seem like you got some important Sh1t to take care of or are "busy" as we like to say...No matter, if she doesn't put out it's most likely not your fault. And by the way. What actions took place with this girl...you seem like your off to a pretty good start with the women. There's plenty more ahead sir.
Continue to ignite. Best of luck.