She needs a hit of her own or at least as a lead artist.
This is her time to prove that she is bringing back female Hip Hop. I don't think she can accomplish that by being a sideline ho on male rappers' songs.
Her label did that, not iTunes. You can't just replace a song either, that would make iTunes a fluke. It has to climb back up to where it was, this happens all the time and the songs get back to where they were with no problem.
They're not promoting Miss Me either, iTunes has Your Love listed as being Released on June 8 thats why is hasnt been promoted yet prolly, hopefully Your Love will climb back up the charts. iTunes could have kept both of. Your Love Dirty could have stayed @ 44 they do that with every of song.