The thing is that you're not going to get the scenes I think you're looking for if you pick at the scars of Mathilde's parental trauma. Regimand was Mathilde's Master, not her father. In Mathilde's mind, the difference is that a Master will actually do something if you're about to be burned to death. There is genuine love between the two of them, but that manifests as professional fondness because that is what both of them are comfortable with. The underlying logic that Mathilde is probably only just conscious enough of to do her best not to think any further about it, is that she would not insult Regimand by slotting him into the role of a father.
As such, Regimand would interact with Panoramia as he would any other Wizard, and so that scene would only be a few sentences long. It might be interesting in a psychological sense but wouldn't really be all that, well, fluffy.