This one is disappointing to me - it should have been good - but really how has she not just been arrested now? In the earlier films she did solve mysteries and saw what others didn't - now though the character is hell bent on interfering with ongoing investigations - and in this case all she managed to do was get herself and mother in danger - the police solved the crime without her input and would have done sooner if she had shared what she knew instead of trying to solve a crime.
There are plenty other series where the amateur sleuth solves mysteries - from Miss Marple, Agatha Raisin, through to others in the HMM series like Garage Sale - none of them have someone with a pathological need to be the one to solve the mystery and deliberately withhold information - and potentially cause a mistrial - the way Aurora Teagarden does in these film series.
There are plenty other series where the amateur sleuth solves mysteries - from Miss Marple, Agatha Raisin, through to others in the HMM series like Garage Sale - none of them have someone with a pathological need to be the one to solve the mystery and deliberately withhold information - and potentially cause a mistrial - the way Aurora Teagarden does in these film series.