It makes sense that the TARDIS has been getting rid of people's possessions and special-interest rooms once they've left, but what's been happening to their Pokémon? They weren't brought aboard with them, they were other-world acquisitions. They agreed to accompany us. Surely they aren't being returned to the wild without a shred of explanation. What's been happening to them?
[a few minutes later]At least three more have disappeared: Tandy, Natasha and the woman who spoke in unnecessarily complex sentences.
I know we've been told the TARDIS chose to take us because she thought we might be useful in helping her find the Doctor.
I also know what we've been told that the TARDIS has been sending people back who don't want to be here.
These explanations are unsatisfactory. I can think of more than one person who wishes not to be here who remains aboard the ship, and I also don't believe that Tandy yearned for home.
I think we're being misled.