I added that Rachel Entwistle was similarly described as "vivacious and outgoing".
I actually think Laci wasn't "soft" and trusting. Her family and friends have described her as decisive, IIRC. Sometimes opinionated. They believe she would've never tolerated him having an affair. She would've blown up and left him.
Scott's mom didn't like her much.
Let me see what I can find about the others.
Jennifer Blagg was described as gentle and sweet. A devoted and protective mother (Michael was likewise described as protective).
Super social:
Killer Dad
Sherri Colemman was described as worldly, tough, "fun, uninhibited and wildly playful." (Christopher was described as a Godly young man, reserved, and the quietest and gentlest of his siblings, who cried when an animal was killed during a hunt and
never got angry.
A Family Erased: The Chris Coleman Story
I can't find much about Mary Jane Longo. She was 7 years older. Interestingly, when she and the kids went missing, her husband claimed she was having an affair. (She was a devoted Jehovah's Witness).