I haven't heard about Freddie being seen again, [Not really a lie.] so you might be right. I've thought it possible they considered it a different way to spend April fool's and when they found out how she left realized wearing her skin wasn't funny, too.

[A trickster or someone on a search. Or both. Or just Mary Watson who might be both in her own right but has made it clear to Will he's not to share details. So listing possibilities and being cooperative it is.]