Thanks for the replies. I did find a work around for this.
Regarding the other points, I have been very rigorous with the quests and Lohse’s line had been a favourite (enjoyed them all actually) so have completed all prereqs. Also, the game is a lot harder on tactician than classic. Also, you are unable to flee to wayshrine in combat in this fight while in the house.
Anyway, the workaround is to make lohse immune to being charmed. I used a potion. Also, I took out all of the nurses without lohse present at sufficient distance from the Dr so that he turned demon and I physically ran away from him to return with lohse and charm resistance which I tried as a last resort.
