Hi guys,
I am new to the forum, and pretty new to the game. Just to do a quick sum up, I got out of a two years relationship a couple of month ago. I have had about 6 or 7 girlfriends + hook-ups, usually pretty hot (HB7 or

, but I was friend with them for a long time before. I am not a natural, have some huge AA spikes sometimes, and when I am tanned/grommed/suited, I'd say I am a 7.
I read the Game, the MM and I just started Magic Bullets, and I watched a lot of David D and style's videos.
Now for the field, I have started to game this colleague of mine (yes I know, very dangerous, very tricky etc...). She is an HB9 about my age I'd say (26), and she's pretty introverted, but I am sure she gets hit on all the time.
So to make it quick, I have completely ignored her for the first 3 weeks she worked at the office, while I was chatting and laughing with everyone else (and I made it visible), especially two guys who work around her. Then she opened me saying she loved the shirt I was wearing that day. I just thanked her politely and kept talking with the guys. Then for my birthday I brought a cake I made to the office, and she came to me to say I was an awesome guy, and we chatted a little.
Couple of days after I started engaging her in the conversation when I talked with the guys around her, being cocky funny and teasing her, which I believe she was responsive to since she laughed and teased me back. So now we have the occasionnal chat and laugh, and sometimes I see her staring at me while she's on the phone. There was an office party to which she didn't come, and I invited her to another party 2 weeks after (after inviting the guys around), but she politely declined. I'm always confident and dominant when I speak with her, which surprised the guys around, but I really don't want to come off as needy.
So I'm confused about what to do next, since I don't really have the opportunity to game her outside the office. It seems that I'm still in A2 and that I need to build more comfort, but since I cannot be too direct because of the office environment, I don't want her to lose interest in me, if there ever was some
What do you guys think I should do ?