no yeah extremely literal. like in canon, healing something impossible to fix conventionally (in this case red lyrium) is a promise a powerful desire demon makes verbatim at one point.

there are some things she let herian in on i don't think she'd trust to myr at this point ('blood magic chantry forest', mainly, i have to check notes to see if there's anything else!!) and she would probably in general be pretty lowkey worried about his placement on the project. so that could be an interesting discussion! because like: he's got the job regardless