Yeah, I don't figure a single wolf pack would be particularly devastating to the wildlife either, especially since Gredya and her kids seem pretty subsistence-minded. I just wanted to mention it to cover all the bases!

For the record, it's entirely possible that there are normal wolves kicking around the forest already. It's generally Europeanish but it has canonical lions, so I'm gonna assume that other big predators didn't get hunted out either. There could even be werewolves, of a generally PG/cartoon-tropey sort, but there don't have to be, and of course whether Gredya and the kids actually talk to NPCs or just hunt rabbits is totally up to you.