Life with a Hellhound girlfriend was very bizarre. So what was your solution?
Marry her and have a kid with her, of course!
Thankfully, it seemed your actions worked better than expected. While Astrid--your darling Hellhound--was still vulgar, and brash, and quite dominant at times, she had mellowed out significantly after being married and having a son. She was calmer, more patient, but still had that fire in her eyes.
Right now, Astrid hummed as she watched your son--her darling little boy--run around, playing with some toys. His little tail was wagging as he ran around. Astrid then glanced at you, her face cold but the look in her eyes full of love. Her dress this time was a bit more modest than usual, and still Victorian in appearance.
"...Hello, love."