Blacklight Chica isn't on any sides. She wants what she wants, and she doesn't care how she gets there. If you were to offer her what she wanted, she'll do one of two things: Accept and help you, or try to get you to give her more for less.

She does, of course, have a bias towards her friends. If Blacklight Freddy and the location manager were to offer her the same things, she'd accept Blacklight Freddy's offer over the location manager's.