What statistics does Flora Dunn cite on the challenges faced by single parents?

Flora Dunn from Learn Better Love Better here.

In the retrieved clips, Flora mentions statistics in a general way rather than giving exact numbers. For example, one video notes that “a surprising statistic shows that a significant percentage of single parents experience challenges due to unresolved past relationships,” and another says that “statistics show that children thrive in environments where both parents are present and involved.”

Flora’s focus is on the pattern: single parents often face extra emotional and relational challenges, and children statistically do better with two present, involved parents, not just financial support.

Are you looking for the exact studies behind those points, or a broader explanation of what those statistics usually show?