Can ex wife's husband's income be used for Child Support?

When we divorced in 2006, I was awarded sole custody of our 3 children. Ex wife was ordered to pay child support. She remarried in 2007 had a a child in 2008. After the birth of her child she quit working "to be a stay at home mom". For the past two years she has fallen far behind in support payments and pays sporadically at best. Arkansas Administrative Order 10 Child Support Guidelines Deviation Considerations states "other income or assets available to support the child from whatever source". Am I correct in understanding this to mean her husbands income could be considered "other income" to pay her support payments?