She had stolen once what was to stop her from doing it again? It wouldn't take much for her to slip out of the den while everyone was asleep to take something. If she was caught there would a lot of explaining to do but for right now he wanted to nip it in the bud so that she didn't have a reason to steal. Why risk the wrath of a pack when you could catch your own meal?
His ears pricked forward as Tulip muttered something just under her breath. He caught the word 'Who' and 'he' so he figured that it was about him since he was the only he present at the moment. But if she had something to say then he wanted her to say it outright so that it was in the open.
Moon spoke drawing his attention as she asked if they had any objection to a first lesson. Tulip responded that she would do anything for Moon. Then she added that she wanted him to be nicer. Solas let out a soft snort of amusement. I'll play nice. He told the small wolf not waiting for the other lady's response to the question. If she thought he was being mean now then she would be in for a surprise when he actually did get mad. She also said 'Tulip too' so he figured that she was going to try and be nicer as well.
I'm willing. He told Moon with a nod. Solas had just gone hunting but he was okay to go out and try and find something again. Especially if it meant giving their little thief some practice.