During a professional conference I met a woman about 10 years older than me (I'm 27, she's divorced and has a 2 year old kid).
She was fine as hell, conversation was good (50% professional 50% personal) and I sensed she might be interested. Luckily it turned out we work in the same company.
A few days later I sent her a work email (only way I could get a hold of her) and thanked her for her help, and made it very easy for her to continue the conversation in case she was interested. She did, and she even suggested we meet at the workplace.
A few days go by and I meet her at work for coffee (about 30 minutes), the conversation was great (about 90% personal this time), though I didn't try to escalate anywhere (she can get me fired easily

). This time she suggested we meet at her place in the evening (she lives nearby) to continue our professional talk. At this point I thought it's pretty clear she's into it. I took her number.
So I come over to hers a few days later, and to my great disappointment the whole thing was work related. We spent about an hour sitting at her kitchen counter talking work (she helped me with some project) while her kid was right there next to us watching a Pixar movie. I couldn't get personal with her for some reason, the whole thing was strictly professional. Lots of eye contact but zero sexual vibe and zero contact. I felt like she wasn't into it at all. Wtf?
After we said goodbye I texted her. I wasn't expecting anything at this point, but it went something like this:
clayface: "Thanks again for your help. I'd be happy to see you again sometime, regardless of work" (was a long shot, I admit)
MILF: "Sure, you're always invited for more coffee" (no thanks)
clayface: "I was thinking more than just coffee. How's Thursday?" (trying to escalate a little)
MILF: "My kid is with me on Thursday. What did you have in mind?"
clayface: "A boring movie and some cheap wine. I'll get the wine, you try to find a movie that isn't Disney/Pixar" (that's all she seemed to have around the house. At this point it should be perfectly clear that I'm interested, if it wasn't already)
MILF: "I'll try to get a babysitter. If I can't, is Friday good?" (I assume she's interested too)
clayface: "Yeah, Friday's good"
I pinged her again Thursday morning with a nice opener, then the conversation got kind of weird. Apparently I didn't make it clear enough that the whole movie night is supposed to take place at her place (she doesn't leave the house much, her life is pretty much work and her kid):
MILF: "Can't go out today, but you're still invited for coffee. Sorry"
clayface: "Huh? We weren't supposed to go out.."
And that was pretty much that. No response.
I want to see her again, but I don't want another night of talking as friends/colleagues in her kitchen next to her kid. I suspect the whole "invited for coffee" thing is just her being nice or lonely. I really have no idea where this is going and if I can steer it in the right direction.
What do you suggest? It's a shame, I really like her.