For starters, this is with regard to a chick I've already f-closed after 3rd date. It should also be noted that we work together for a big company, in a big building. General background: Spent a weekend together, no sex (she was on the rag), and then two days later she asks me to come over and we bang it out twice that night. She starts to get really invested and even talks about relationship shit. I just kind of go with the flow, but make no commitments. Well after a few days she starts to cool off really fast saying she's not ready to settle down and isn't ready for anything serious. I give it a few days to die down and she starts coming by to see me again at work, so I start rebuilding attraction/comfort, and have been over the past two weeks via text and face to face contact. It's going really well and she is now coming by multiple times throughout the day to see me. On Monday I casually invite her to join me and some other friends for drinks after I was unable to do lunch with her (she invited me). She says possibly, but doesn't end up coming out (she texts me to say that she can't). I didn't initiate any contact and then yesterday she hits me up at lunch again asking what I'm doing and this is where the convo starts:
Her: What are you doing?
Me: Saving some kids from a burning orphanage (15 minutes later)
Me: Lol, at lunch
Her: Oh shoot. My invite must have gotten lost in the mail (5 minutes later)
Me: What are you talking about, I've been sitting at Subway for the last hour waiting on you

(about 20 minutes later)
Her: Sure (5 minutes later)
Me: Aww. I'll have you know I made a visit by your desk, when I got back. I even brought you a cookie! (this was about an hour later. She gave me a hard time the day before that I never come to see her...and there was no cookie, you'll see)
Her: Lies (5 minutes later)
Her: I don't see a cookie
*She comes by to see me at this point, and we flirt and I blame her co workers for being thieves and stealing her cookie, she ends up leaving*
Her: Liar (5 minutes after leaving
Me: Look in your bottom drawer (5 minutes later)
Her: Still nothing (immediate)
Me: It might have been the top drawer (20 minutes later)
Her: I just wasted 30 seconds of my life looking for a cookie that doesn't exist (30 minutes later)
Me:

(about 5 minutes later)
*She comes by to see me again before she leaves for the day and she's got a shit eating grin on her face, and playfully punches me. We talk about her heading out of town the next day, and flirt a bit, and escalate some kino. While in mid conversation, I stop her and push a lock of her hair that had come loose back behind her ear and say "sorry, that was bothering me". She ate it up. I asked her what she is doing tonight and she makes it very clear that she has no plans. I don't ask for a meet up, and just act indifferent about the night. She leaves and says she'll text me later. Given her interest level earlier, I hit her up later in the evening
Me: I wanna see you, let's watch a movie (around 10 PM)
Her: That's code for let's have sex (this was about 5 minutes later, but when i first sent the text she immediately started typing, but then backed off and waited to send.
Me: Slow down tiger, I'm not a piece of meat

Let's start with the movie (5 minutes later)
Her: I'm out with *Friend* right now (5 minutes later)
Her: I still have to pack too (3 minutes)
Me: Nice, you guys have fun. Let me know if you need help packing (about 5 minutes later)
Her: Is that another code for sex? (10 minutes later)
I didn't respond to this for a little over an hour because I wanted to give her time to get home, and I follow up with "It mean's I want to send you off to *destination* with a smile on your face.
She never responded, which could mean that she came home and went to bed, or wasn't feeling it. I am positive that up until this conversation that she was highly invested and throwing off all kinds of kino and IOI's. I got off my game at the point where she kept pressing if it was code for sex, because I think its fairly obvious that it was, but I didn't want to come right out and make her feel slutty, because when she slept together she dropped the line about "I can't believe we did that, it's skanky to sleep with someone you're not dating"
Should I have handled this differently? I'm wondering if I should have just owned up to it being about sex from the get go, but tried to play it non commital so she didn't get scared off. Any help would be appreciated.