There could be a lot of contributors to that. A child of a widow will deal with grief but hopefully move forward together as a family. Potentially even trying to honor their fathers memory in the process.
A child of a divorce is likely to deal with anger, instability from custody agreements, custody battles, emotional fights and manipulation between parents, new relationships on both sides and the changes that come with that including issues with step siblings.
Divorce comes with so many negatives for children. A “healthy” divorce is rare from what I’ve seen to this point in my life.