Wow! We're not sure Floyd Mayweather can protect his daughter from this. His daughter Iyanna, also known as Yaya, could face a lot of time in jail. Yaya could face 99 years in jail for stabbing a woman. A few weeks ago, she was arrested for allegedly stabbing her boyfriend's baby's mother. If you don't know, Yaya, 19-years-old dates rapper NBA Youngboy. Yaya came over to his house and his baby's mother was there and that's when the woman and Yaya got into an argument, which led to the kitchen where Yaya picked up 2 knives. According to The Blast, Yaya was officially charged with Aggravated Assault With A Deadly Weapon. That is a serious felony in the state of Texas. Yaya's sentencing could go from 5 years up to 99 years in prison and a $10,000 fine if she is found guilty.