This could totally be how it's meant to be but...

All my other pets besides one have a decreased training time with my GA. It's 51 minutes.

But then Marianna's training time is 76.5 minutes for some reason. I swear she always had 60 minutes without the GA, the increase is ... odd. She has the highest stats of all of them, but she's still only tier 1.

Any help/ideas?

The training times increase for the first time at level 50, and then again with each 100 levels you gain (150, 250, 350, etc). If your pet has a level of 50 or higher, that would probably be why c:

Yeah, at level 50 it increases to 90 minutes. Which is 76.5 if you have a GA.

Aw, alright. That makes sense. She's level 55 I think. Thanks a lot guys!