I’m sure the maid is fine and ‘surprisingly’ capable.
Still dumb as F to just assume all safe now, the main ones dead.
He’ll now go back and refer any compliments over his handling of the situation to his wife.
Not that it’s wrong politically (in his very specific setting), but doesn’t give much for MC escapism for the reader.
I suspect the maid has some combat training and also acts as a guard for Zenjirou, although I'm not sure what she can do without a weapon or with something as small as a concealed knife (this would be fine against a human, but not against the scales of a dragon).
You do have to wonder what Zenjirou is thinking running after Ines without a weapon when he has just heard she's encountered legion dragons. It certainly doesn't reflect well on him.