So I was in the Olde Town B.O.X. with a Menu Chat player on my team. She got defeated, and I had no heals available for her. There was no way to tell her to flee and come back to the dungeon. I tried to use "Run!" and "I can't." but she didn't understand.
I think a phrase like "Flee, I cannot heal you." or "Flee and return, I cannot heal you." should be added right after the one that says "Don't flee, I can heal you."