so i met this girl around 6 months ago. we've always been casual flirty but thats how the friendship is. she'll call me baby and i call her wifey. lately ive been thinking more about her so i decided to try to escalate the kino and escalate the flirting. friday she asked me what i was doing so i said i was gonna go hang out with co-workers. she said she needed help on homework so asked if i could help her. i said sure, ill give you a call later. so around 9 i call her and no one answers. next day, she asked why didnt i call and stumped, i said i did and showed her my call log. so she said oh, im not mad i was just wondering..
then i went out last night and she said she was at home studying, so i decided to text her around 12, told her i was super drunk and needed a new word for it. she texted back and said she didnt understand. an hour later she text me again, be safe tonight bad boy.
in the morning i texted her how i didnt even remember drunk txting her. she txtd back haha dork. so i called her. she didnt pick up but called back 10 minutes later saying shes about to take a shower. she asked about the text of being drunk and the new word, and i reminded her when we talked about how she makes up words when she cant think of the right word and she laughed. she told me she was bout to shower so i asked, oh so youre naked right now? more laughing and she said yeah, more fluff talk and she told me she had to study all day today, tomorrow and tuesday for some midterms this week. she asked me what i was doing so i said yeah im gonna study too. so i told her yeah, you should probably study though. she said yeah. we left it off there and she said well call me if anything.
around 6 or 7, i decided to take a study break. so i txted her
me: hey stop
hb: stop what?
me: stop smiling when you think of me, sorta like right now
she didnt respond so i thought, aw man, shoulda used another txt line. a few hours later she text me just a "

"
we always have days like this of just goin back and forth but nothing ever goes anywhere. i dont know where to go next. after a week of not seeing her i see her and escalate things go well, but the next time i see her, maybe a day or two later, i go back to where i was on the first day i saw her. i wanna get her on an official day 2 since she wont have so much to study for, but dont know how to minimize the risk of flaking. some advice would help.