It most certainly isn't an insult, giants are neutral beings where she's from, them being good or bad is entirely up to them.

"Pick a fight?" she looked surprised and then turned to the nightmare. "What is this about you picking fights, Jarem?" the horse ACTUALLY looked contrite and bowed his head, nickering and shaking his head. "That's simply no excuse," she wagged a finger at the beast. "You can't go picking fights, you're so big and strong, you could hurt someone!" the horse, now seemed to be genuinely conflicted at being praised and scolded at the same time. He chuffed and she nodded.

"He did say! But it's nothing more than an excuse. Jarem, I don't want to hear another word about you picking fights, if you really don't like the way someone smells, you tell D, you don't try to stab them, am I understood?"

The horse, Jarem, nodded.