[ Oh god. A direct question! Her worst nightmare!! Doreen immediately crams the rest of the donut into her mouth and stalls for time as she chews. It takes her a few seconds to work her way up to lying. ]

Y-yup, that's me! Full time, all the time! I mean, how would I even hide this thing, am I right? That'd be nuts, pun totally intended!

[ This is like... half a lie, she does always have a tail, and she's always ready to fight crime, she just... isn't in costume all the time? ]