There are situations where, statistically, children are at increased risk. "Great risk" is a bridge too far. If anyone could accurately predict the risk of child abuse, it would almost never occur. To get back to the show, there is zero evidence that Luis is any kind of a risk to Mollys' children or anyone else. IMO this kind of speculation in regard to a specific person, in the absence of evidence, is highly irresponsible. The label of "abuser" is impossible to remove, once applied.