Iron Moth can definetly TRY to abduct the MC, if Palkia is watching then she probably won't get very far.
Dialga getting pissed off at the paradoxes and Pladea in general makes sense.
Giratina would certainly like being around such aggressive Mons like those two.
Does Terapoagos have anything to do with Ultra Space?
I was just going to have the UBs send some milk through after the MC leaves, saying it was from other members of their species, they're common in their home dimensions so it wouldn't be hard for them to find it.