:thinking: I don't pretend to *know* the answer but I'd imagine it depends on how long it'll be before you felt. If it's almost done I think the stain will come up with felting i.e. washing - but if it stays as is for a week I don't think the washing will do much. Same as any other stain really.
Does it show as it's drying from you dabbing it out?
Bummer. Better have some more of that Christmas spirit!