Like I've mentioned in passing, everyone in the PGC that needs a place to stay, they are free to "work temporarily" at the Breeding Centre. Saber trusts she can defend the place herself if Team Rocket causes trouble (because that's sort of her thing), so innocents don't need to be worried.

Although I wouldn't be opposed to any Rockets that come to poke around if they get a whiff of this in some manner.

While Saber's not much of an information gatherer, she's really good at leading a charge should something of that nature be needed. Maybe she can be on backup to defend or something of that nature in case something goes wrong.