Raine didn't use her own hand because she didn't want to hurt herself, moreover those Lycans had just right amount of strength to make Jenedieth suffer enough.
Next to Jenedieth was Alpha Ryan with a battered face, he growled loudly to stop the Lycan for hurting his mate, it was kind of torture for him to see Jenedieth being humiliated right before his eyes while he could do nothing except spout profanities.
Raine didn't stop the Lycan and stayed quiet when Alpha Ryan's wrath was directed at her, after all he couldn't do anything aside from talking nonsense.
This was for Clarice and her son, yet this kind of torture was still very light compared to what Ryan had done to them.
Only when Jenedieth couldn't move anymore and her face was very swollen from being slapped so hard continously for a few times, did Raine raise her hand to stop the Lycan and he conceded.