I'm not gonna reallocate any stats over it but I'm inclined to say Cinna would. Her class was Cavalier in Pathfinder (she had a Capybara mount), so if there is some kind of mount animal she'd probably have had some experience with it. The idea of her riding like.. a turtle is pretty funny and cute.
She'd be her usual gruff self but loving. Any busywork in providing care is mediative/calming to her. Definitely would take pride in the bond with her animal, and critical of how others treat similar companions. (Very judgy, "I would do X routine this way with my animal, don't screw around") And she would prefer it's company than most critters- in Pathfinder she often would sleep in the stables rather than room with the party.
And of course speaking badly of her pet would get her hackles raised.