[ Oh no... is Ford going to ruin Willow's relationship with her partner with this information...?

Probably not, actually, and it's something she should know anyway. ]

Willow, I haven't found a single piece of vampire lore originating in Trench that doesn't connect to Vilebloods in some way.

[ For some reason it's been a subject of significant interest to him lately. ]

Plenty of things I've found suggest that Vilebloods are vampires - or close enough that the difference doesn't matter.

I understand that you're worried and I appreciate that you want to help, but I'm not going to risk any spell that has a chance of hurting Mabel, no matter how small that chance is.