The only plausible reason I can imagine as to why Rih would reject this, is contrasting lyrics.
She can't go from Bitch Better Have My Money to "I don't need no money" and "I can't got cash, but I got you"
No she probably denied it because she wants something with a little more grittiness and maybe complex lyrics. This could easily go to Becky G and be a moderate hit.
This song has been stuck on the repeats for sure! I wish she would list each song's originally intended artist! I wanna know if there are any Britney rejects!!
Is it going anywhere..?