Strong feelings for coworker - what should I do?

[rubyday9978]

I'm 36f, have recently realised I have strong feelings for a female at work in her early 40's. She was in a role, not exactly superior to mine, but she was one of several people assessing me as part of further studies I was doing this year. Both of us were neutral and professional during this time. Now that has ended and I've realised that I really enjoy spending 1:1 time with her, we have similar values. Both of us are looking for other jobs, which would reduce the work issues.

It is complicated, as she has a daughter, which I'm happy to have in my life, but would need to go slow and be respectful of her. I'm also doing ivf as a solo parent, (she had her child the same way), and she has indicated support towards this.

We recently had a dinner with other coworkers but it was very casual, and I slipped into the conversation that I dated women and was single. She went quiet, then said (to the group) that her daughter wanted her to get married and give her a sibling, and the best way to do this would be with a younger woman who could have children. This seemed specific to me, but I might be overthinking. Sometimes she is very complimentary and close to me, blowing kisses hello at dinner, then she almost catches herself and becomes more distant, professional and shy. For context, I have never had a long term relationship with a woman, but am wanting something serious at this point in my life. 

I feel she can't make a move (if she does have feelings) because of work, the age gap, previous hierarchy. I'm scared to do anything in case I've imagined the whole thing, and I also would never want to cause her harm. I have texted her in the past, and she responds, but just briefly. She doesn't initiate text yet. Otherwise it's work email or at work in person is how we communicate. Am I imagining things? Do I just have to wait? Thank you.