MWS: Bride becomes vampire mid-vow-exchange (LOL)

I'm placing this here rather than in bug reports because 1. no, I didn't test this unmodded and 2. this is almost certainly a wacky edge case. However:

My Sim is a vampire, and as a teen he had a romance with Cassandra Goth. They attended university together as roommates, and finally the time had come for them to marry! He offered to turn her at the Batch Party, and she accepted because she was an NPC at the time.

In the middle of "Exchange Vows with Officiant and Kiss," Cassandra became a vampire.  (ROTFL!) This checked off "exchange vows" and "spousal kiss," but I had them kiss again anyway. We danced until 1 or 2, and then I ended the service and was surprised to not get the "moving in together" popup. But this was only my second wedding with MWS, so I shrugged and had him ask her to join household.

It was the next day when I happened to open her profile in the relationship panel and discovered she was still his fiancee, so they eloped in the living room because screw it, I'm not doing the wedding again! I do consider "exchange vows" checking off but them not being married "buggy," but it was interrupted and I can see how that happened.

(Should I have put this in General Discussion and Feedback instead? If so: Oops.)

I do have video of her changing in the middle of the wedding. It's kind of hilarious!

ANYWAY. In the highly unlikely case that this happens to someone else? you need to re-start Exchange Vows, even though it's checked off. LOL!

[Edit] Someone off-forum asked for the video, so...https://www.youtube.com/watch?v=9d7fqUzripg