Okay, firstly I was already in the dimension, so I couldn't have leveled up anyone, as there were no wild areas, but thanks anyway
Second Rocksy was Finally able to do it with magnitude (with help from the rest of the team)
But OH BOY the sacrifices were real. Thank God this wasn't a nuzlocke, cause Rocksy was the only one to survive the battle war. I only caught her because she was shiny, but I now realize if I didn't, I would have been so screwed.