Complex sentence: Rose is currently working on a secret non-musical project with her friend Priscilla Ono, and currently being managed by Letitia Jean "Tish" Cyrus, mother of singer Miley Cyrus, who is a close friend to Rose and her husband Wiz Khalifa.
Split into simpler sentences: Rose is currently working on a secret non-musical project with her friend Priscilla Ono. She is managed by Letitia Jean "Tish" Cyrus, mother of singer Miley Cyrus, who is a close friend to Rose and her husband Wiz Khalifa.