Really, Frigga didn't doubt how good of a father Loki was. He had been kind to his own children but it was the children of others he seemed to have enjoyed torturing. She couldn't pretend this didn't still upset her but she couldn't help but trust her instinct which said he was being real with these children. Grey seemed to like him a lot and looked very pleased with his ability to figure out the puzzle.
Frigga entered the room, Opal on her hip, and she came to settle on the couch beside Loki giving Hnossa a strong look.
"J-S, be nice. Grey you're doing so well, your mother said you had been excited to see the engineer's lab at Columbia," she set Opal on her lap and glanced to Loki.