Observation
Diane Fedder was second trustee and second power of attorney.
She cast suspicion on Keith Harper in her interview with CBS8 as well as the children. If something happened to Keith Harper such as his arrest, death, or incapacitation Diane would inherit the trust and all control because of her secondary position.
IMO, If the adult children were cast in a negative light and she were to be held above suspicion because of her law enforcement background she could have inherited everything and been free of suspicion. IMO that was her plan.
Diane Fedder, ex-secret service, is the one who IMO positioned herself as a "friend" of Dia's close enough to manage her estate because, according to her, Harper is highly suspicious as are the adult children. IMO Harper is a shadowy and unsavory individual. IMO As is Diane Fedder. IMO Diane Fedder, however, has the law-enforcement background to orchestrate a disappearance this confusing to local LE. Could Harper be that good to single-handedly disappear Dia? IMO There were multiple other people involved.
IMO it could have been the plan after Dia's disappearance to harm Keith Harper or expect his arrest which shifts control of everything over to DF and her allies.
From what I have heard (and MOO), DF was married to LE before, she had a long career in LE, and now is getting married to LE again. Just my thoughts, Could she have allies in LE in Riverside that would allow this investigation to be so confused and delayed? IMO she is hiding the most here.
IMO, it is possible DF's allies planned to all get some take from Dia's estate while Harper faces all suspicion.
IMO, DF and her law enforcement credentials, especially being secret service, make this case unique and IMO might explain why LE is being so coy about any information. IMO it is possible she is being protected, even at a federal level.
IMO If DF is involved in a possible homicide with a career criminal sex-offender in KH.... has a secret service agent, ever, in history, been in so much trouble or done something so evil?
This situation has to be very serious on many levels to all of LE, federal, state and local. It is sad we don't know if they are even working on it seriously or if they are protecting DF.
All MOO.