"I'll take my chances and not, thank you very much." Climbing these dreadful stairs every day were exercise enough for Aurora. She had never been particularly athletic, though she had participated in yoga on a bi-weekly basis. At least, when she could be bothered to pull herself away from her many little Astronomy projects.
Starting the climb up one of the many moving staircases Hogwarts had to offer, she did marginally slow her pace so that Tonks wouldn't have to powerwalk to stay at the same pace. The move was unconscious and Aurora would have vehemently denied being anything resembling nice to Tonks, for it.
"I don't suppose you know who the father is then?" Had they still been students at Hogwarts, the term 'slag' would have rolled off her tongue without thought.