[Santana, having seen so many others go through that rip thing and back to empty versions of their homes, is not in Lima. She won't go back until she can brace herself for being home and not having Brittany there.
Therefore, she is still in the mansion.
Dressed in
this charming outfit and singing
this charming song, Santana strolls around the halls and rooms. So very festive.
And kinda bored.
But whatever; she's making it worth your while if you're sticking around the mansion. Basically, anyone she happens to come across, she will sing a couple lines for, flirty and sexy and funfunfunfun, before moving on to the next stray. Even if no one's around, she's singing.
Saintana, of course, is hiding in her new real-side room, horrified by her real-self's forwardness.]