I'm annoyed that Dale seems not to have made a standing offer to restore one or both of her horns with healing magic.
In any case, some of his desires for exclusivity are disturbing and not amusing, but a desire to be amongst those with whom she corresponds is understandable. What could be proposed is that she write letters to give to him upon his returns from various absences. That might not work for her, as she might want to relate all such things by speech; but the idea could be proposed.