Hot springs.

The healer will be responsible for cooking what the hunter hunts. Jen will, today, have the last second night watch, the worst one. But for now she'll be free. You wait until Jen is alone inside her tent before saying

Jen. I can feel you're still uncomfortable "Wow, congratulations. You're a genius. Next you'll say I feel disgusting after doing what I did" I understand your feelings, considering your situation. I think we don't need to be enemies during the whole travel. Your goddess might have sent you for me, to lead me, and if that's the case, I think we both have an objective in common "Bullshit! As if Amari would ever ask for a creature as rotten as you, you demon..." the volume of her voice raises, but she notices it and lowers it to avoid drawing unnecessary attention. You continue Again, it's fine that you feel this way. But I honestly want you to be well. I suppose you're feeling dirty and that's breaking your concentration and making you feel bad. That won't do. I found a nearby lake with hot waters due to the volcano. I want you to take me off and put me inside your tent. Then you'll go to the hot springs and take a bath, enjoy the water "...and what's the catch?" Tonight it will be a wild boar. As you saw before, I can control the animals, and you'll eat pork. I want you to relax and get focused. I released your mana a few hours ago, but you're so tense you didn't regenerate a single point yet. Jen is surprised at your sudden benevolence, but accepts the proposal. Now, remember. I'm doing this to see you well, but I'm not risking yet. I'm watching your friends, and if you snitch or double-cross me I'll take them. Now go and enjoy your bath.

She covers her body in a towel given by Liz and, after annoucing where she's going, leaves to the spring. As you promised, the hunter returns with a boar and a tale about the easiest hunt he ever hunted. You keep your eyes on the group. Jen actually tries honestly relaxing, and when you think she's calm enough, you stop stealing her mana. She notices her magic returning and feels a sense of peace.

You consider your options. Getting on the priestess' good side would be nice, but depending on her wouldn't be wise. Priestesses of Amari tend to be arrogant.