What should my next move be?

I have this one friend I've known for about 9 or 10 years now. He has a girlfriend and a 5 year old son who live with him. The girlfriend has a sister who was living in another state, but moved to our state a few months ago and moved in with them until she found a new job and a place to live. I had met her a few times before, but I didn't know her that well until she moved here. She told me once when I was hanging with all of them she wanted to go to an MLB game where we live and see the stadium. I decide to pull the trigger and ask her to do that, and she agrees. We chatted the entire time and I got to know her quite a bit better, and she got to know me too.

I bought the tickets since I knew she was unemployed and wasn't making income, but she decided to buy me a beer to make it even. She really liked how center field looked, and I got a photo of us there during the game. I definitely believe my friend's girlfriend is an amazing person, a great mom, and easy to talk to, and I felt it was possible her sister would be easy to talk to as well, and I was right, she is.

I have her number, we've chatted a little bit over text since that game we went to, and we all had a game night the other night. She had told me before she wanted to see some other things in the area, but wanted to do a game night first with all of us. My friend also told me she in the past has had bad taste in men, and had Tinder dates that ended up with her being ghosted. He also told me she doesn't want to date right now. I didn't ask her that yet, as my main intent at first was to get to know her more, but I was, and still am, potentially open to dating her.

I'm not sure how to approach this coming up, though, and how my timing should be since she also did find a new apartment and job within the last week. Should I initiate the "hey you wanna hang out again"? or should I see if she tries to do it with me? Should I be completely honest and tell her what I'm thinking? My friend knows it about me.

What should my next move be?
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