>>50919272That's because she isn't.
She forgot to put them on and Rowlet didn't tell her because Pokemon don't understand why humans need to wear clothes.
Not that she really understands, either. She wears a full outfit because she's been told to and it completes her look, but she has no concept of modesty so it easily slips her mind.
Telling her she's completely nude from the waist down elicits the same reaction as telling her she's not wearing her hat. Just an "Oops, silly me". Any embarrassment is over her own forgetfulness and not her pussy being exposed to the world.