I’m still reserving judgment since there’s so much about PF’s family we don’t know. Please correct me if I’m wrong: the state of PF’s mother’s health hasn’t been confirmed. Do we know what PF told his family about his relationship with KB? I know he was identified as ‘fiance’ very early on, but then we hear they’ve been broken up for quite some time. It was suggested that a family member (one or more) believed KB flaked out in the past and took off (which I don’t believe).
IMO it’s quite possible that she may not have been around PF’s family recently. I believe PF led his family to believe that his romantic relationship ended and they were now co-parenting. It’s possible that when KB went missing, PF suggested she ran off with heaven knows who.
When KB sounded the alarm of Kelsey’s disappearance, his family might have felt awkward coming forward speaking out in support of (presumably) their son’s ex-girlfriend who took off on her own again. <<< if that’s what PF led them to believe. By the time it became clear she was missing/endangered, the damage (their lack of public empathy) has been done.
As far as intervening in custody, perhaps his family has formed a bond with Baby K. Perhaps if they believe KB was flaky, they have concerns about her family raising Baby K. Not saying this is the case, but a possibility.
I do think the denial is strong in his family. However, I’m just not quite ready to make the leap that all monsters have awful parents. That’s certainly a possibility, but I need a little more evidence. Just my opinion.