a friend "joked" she wants to be our unicorn last sat. ive been awake replaying it since

sunday night here. couldnt fall asleep. we hosted a small dinner party saturday. 4 couples + one single friend "lila" who is mid 30s, single after a long term thing ended last yr, sharp, funny. we have been friends w her like 6 yrs. she does NOT know we are in the lifestyle. nobody at the dinner knew. around midnight after a lot of wine, we were on the back porch (just me, my wife, lila, and one other friend who passed out on the couch shortly after). lila stretched out and went "you know if you guys ever needed a third for anything, id be down" and then immediately laughed like haha just kidding. then she added "for real tho, you guys are couple goals, id be ur unicorn lol". like 4 seconds of looking at us. then she got up to get water. my wife and i made eye contact across the porch and i could see her trying not to react. we know lila very well. she NEVER says stuff like that. she is not normally crass or sexual in conversation. that wasnt a normal joke from her. f37 he 39, lifestyle 6 yrs, we mostly play w other couples, very rarely w singles, NEVER w existing friends. that is a firm rule we both agreed on yrs ago bc weve seen too many friendships in the community torch themselves over this exact scenario. so on the one hand. firm rule. answer is no. easy. on the other hand though, she DOES know us. it WOULD be a once thing. she IS attractive. and im lying if i say my wife and i havent both privately thought about her over the yrs. the actual question is not "should we" — the answer is no, we wont — its how do we handle the next time we see her without it being weird. she clearly remembers what she said. shes been quiet in the group chat since saturday. shes either embarrassed bc she meant it and we didnt bite, or shes embarrassed bc she didnt mean it but it came out, or shes WAITING for us to follow up privately. oh and one more layer btw, by not even acknowledging the joke, did we accidentally out ourselves to her as people who took it seriously enough to need to not respond. she literally got 4 seconds of silence and an eye contact moment between us. a person not in the lifestyle would have laughed and made a joke back. our silence was probably louder than her statement.