Not so much evidence on that WH side of things but plenty of evidence on the DS side of things when it comes to putting people in "witness protection" after certain events happen.

A perfect example is the Challenger shuttle which, it would seem, wasn't supposed to blow up but ended up doing so. Every person that was supposedly on that shuttle had new identities created (since they weren't actual on it and didn't actually blow up). Identical twin siblings appeared, last names were changed but they maintained the same first name, etc. Those people couldn't be alive anymore but they were dutiful participants in the DS so they gave them new lives, some more thinly veiled than others.

I'm sure the WH have done this, I mean most of this plan is flipping the playbook and using it against the enemy, why would "witness protection" not be one of those things? In fact, I'd be willing to bet that many people we thought were "dead" reappear after it's safe to do so in a way very similar to Broadway show when the full cast comes out on stage to take a bow. This will allow previously "famous" people to help explain the reality of how things were to the grief stricken normies.

When it comes to Janet, if she was afforded that opportunity, it's highly likely her friends and family wouldn't know that had occurred. It just seems weird that the DS would wait so long to take her out given everything she had very effectively put out there for the world to see. Like I said prior, no proof or evidence to suggest that she was rescued but if there was anyone who deserved it, she would certainly be one of those people.