It's the song that keeps on giving with almost 600 million views on YouTube, streaming, her only number 1.
Mary told Dre to get a rapper for the bridge and he was like nah you must write a bridge, which she wrote by herself. Otherwise she wouldn't have had a writing credit on the song.
The song was written by her half brother Bruce Miller. She needs to work with him again because he got her musically but I read somewhere he got into drugs or something.