The Heartwood stop existing and start living

There was a pattern starting to emerge in this fight. Theseus would get hurt, then Somnia would hurt the cougar. The cougar would hurt Somnia, then the cougar would hurt Theseus, or at least try to. That meant it was Somnia's turn to attack. The pattern would likely continue until one or more participants of the fight fled, or even died. Hopefully that participant would be the cougar.

While the cougar was focusing on Theseus, who seemed quite vulnerable on the ground in front of it, Somnia lunged at it. She grabbed a furry hind leg and pulled back, giving the cougar a nasty bite wound as well as effectively tripping it. She had to let go to maintain her balance, but the blood staining the fur around the wound would satisfy her.

She spared Theseus a glance to make sure he was alright. Then, she gave the cougar a growl to encourage it to get moving already. Whether it was ready to go on its way was another story.