A small shrug of her shoulders. "They're pretty common where I'm from."
Not nearly as common as the battle droids were at the moment but there was always a good number on any of the Republic's cruisers. Especially in the hanger bays. Ahsoka would take an astromech any day over a tinnie.
"Disassembled him for reprogramming and repairs. I'm going to put him back together." It probably wasn't a good idea to mention that he would have tried to kill them all - or at least the Jedi.