Woman: How should I approach you, what to say?

I saw an attractive woman playing mini putt golf with her daughter today, I was playing with my son. I made a few brief comments, but how can I approach her? I didn’t have a conversation with her but I wanted to see if she would have been interested in getting a coffee some time. Would it have been scary for her if I gave her my number and asked her for coffee? Didn’t want to ask her for her # as I thought that might have been weird since I know nothing about her.
Girls, what should a guy do if he sees you in a place that you can’t really talk. Advice welcome.

Since you were there with your son too it probably wouldn’t be disrespectful to go up to her. Be mindful that her daughter is there. Ask her if she goes there often with her daughter. If so, then maybe you could get together next time with your kids?