Yes, I know you are a very respectful guy. However, that would not be disrespectful, in my opinion. Unless she has social media or there is someone else there that knows her and you can ask them, then that really is the only respectful/covert way that I can think of is mentioning something about her and a husband.
But hey, I've never asked a woman out either...lol
I've also never asked a guy out either for that matter. I'm old-fashioned that way, I guess. So guys have always had to ask me out.
I had a guy friend... we flirted for about a year and neither one of us was willing to ask the other out. But finally, he asked me did I like him and I said yes. He said well why didn't you ask me out? He said that he had never had to ask a girl out they always asked him... Guess, he was a chick magnet too....lol
I told him that I never had and never would ask a guy out because I don't feel like that is a woman's place. Guess that makes me old-fashioned.
To make that long story short...We dated for a while, but it ultimately didn't work out....So there is that as well....lol
But anyhow, I think there are more women out there who feel like the man should initiate a date. So a guy may have to do the asking when it comes to some ladies.