Sisters of YouTube mom Ruby Franke speak out about child abuse charges: "I had no idea what was happening"

Ruby Franke and Jodi Hildebrandt are charged with aggravated child abuse.

They face a maximum sentence of 15 years in prison, and are being held without bail.

Franke was known for her online parenting videos through the channel " 8 Passengers " Her sisters have released videos detailing Franke 's separation from their family and efforts to connect with her children.

Deru: "We are not going to let Ruby destroy another thing in our lives" Both sisters ended their videos with messages about how they will continue to advocate for Franke 's children.

"We couldn't make sense of what they were doing and why," Deru said.