Dad in court for beating of 2-month-old baby; threw infant to ground breaking several bones (Canandaigua, New York)

Notice that there is no mention of a mother in this home and that the baby is now in foster care. What happened to Mom? Given Dad's young age, I'm betting this was a custody/visitation situation. But why has Mom lost her rights if she's not charged with anything?

Dad is identified as MARK PERRIN.

http://www.13wham.com/news/features/top-stories/stories/father-court-alleged-child-abuse-16956.shtml

Father in court for alleged child abuse
Updated: Wednesday, October 22 2014, 06:20 PM EDT

Canandaigua - A Canandaigua father accused of beating his two-month old appeared city court today. 19-year old Mark Perrin is facing charges for tightly squeezing and throwing the baby on the ground. His actions resulted in the infant breaking several bones - including its leg, arm and several ribs.

Prosecutors want to raise Perrin's bail from $5,000 to $25,000.

"We'll need to review criminal records, talk with the physicians involved in the child's care because there are multiple injuries to the child. And we have to understand how they were caused and over what period of time," says Michael Tantillo, Ontario County District Attorney. "Once we have a clear understanding of that then we will look to see what the additional charges are. Right now he's charged with assault in the second degree. It's possible that's where it will stay. It's possible those charges could be raised. It all depends on the information that we derived from the investigation."

The baby is currently in foster care. Perrin is expected back in court on Friday for a bail hearing.