Having met them personally, I can tell you that they are absolutely trustworthy.
They’re a bit … eccentric when it comes to eggs (they have yet to train their ditto to leave their other pokémon alone, so they tend to stick passing trainers off with eggs now and then under the pretense that they have no idea how the egg came to be), but when it comes to pokémon care, you’ll find no one in Johto more trustworthy and caring, to be honest.
Well. Besides my mother, actually. But unfortunately, she’s not a licensed pokémon caretaker, so I’m afraid she won’t be available to care for your marshtomp.
Let me guess. You’re only mentioning her because she’s reading this, isn’t she? —LH
No, of course not. (Yes.) —Bill