i committed a social media faux pas could use some advice

So I am a couple days away from rsvp date and posted asking about rsvp rates from friends about their own parties and weddings. It turned into a thread of “did you get my rsvp” comments.
an old friend who did not get an invite commented on that fact. Yes I know I shouldn’t have posted about anything related to that running that risk. Didn’t think that someone would say that as it’s not tactful(I know mine wasn’t either.)
looking for a tasteful way to tell her why she didn’t (or should I even respond?).
our friendship was as best friends before a large amount of drama and her longtime boyfriend hating me and refusing to allow her to see me (he’s abusive and I haven’t kept trying after several years to keep friendship alive.)
she was one I struggled on but given the tons of drama and such I decided against it.
any advice welcome. Thank you!