Where to find the owlbear cub AFTER killing all the goblins?

I killed all the goblins and completed most of the tasks in the underdark (with the exception of saving the elves - which I think I still have to do) I then went to the owlbear cave and left when the mother told me to.

I did a long rest and went back & goblins had killed her and took the baby. The only goblins left are a handful wandering around passively at the blighted village (I think?)

I saw someone say that normally the owlbear would be at the goblin camp, but it's wiped clean.

I also saw someone say they found it in the underdark...but I've also cleared it (at least I think I did)

Anyone have any suggestions on where I can find the little baby?

UPDATE- after a few long rests, it came to my camp! It ended up tanning away, but I'm sure it's been triggered properly now and I will end up with it one way or another!

Thank you all for your help!