Why assume her children are maladjusted because she has 7.
Some of us grew up in big families, and suffered from a lack of parental attention, space, resources etc. It's a given that the more children a parent or pair of parents have, the less individual attention the children have. I'm the eldest of my large family, and I wouldn't like to think of other children in my position -- writing my own sicknotes, never having a parent to help with or check homework, not having anywhere to do my homework except lying on my bunk bed, a proxy parent for the youngest ones etc.
I'm the only one of my large sibling group to have had a child, and I have one child by choice.