Does anyone believe that the authorities are still actively investigating the Hannah Anderson case?

I see several people saying that the authorities are just pretending to have closed the Hannah Anderson case to ease the suspicions of any possible suspects. (Which I guess would be Hannah or the cat, as they seem to be the only possible surviving suspects.) All the investigating authorities I have seen reporting on this case seem to have ceased investigation of this case. They all seemed to have closed the case as soon as DiMaggio was killed by the SWAT Team. Is this normal procedure when a suspect is taken out like DiMaggio was? I am thinking that it looks like the authorities don't want to take a chance that further investigation might produce evidence that they killed a reluctant accomplice in order to "rescue" a possible murderer.

Several news sources are reporting that many business establishments and individuals had surveillance footage of different segments of the case that showed Hannah and/or DiMaggio. Individuals that had seen Hannah and DiMaggio interacting said they were never contacted or questioned by any police agency. They said they kept expecting the authorities to request the footage or, at least, ask them what they witnessed, but they never did. Now, most of that video evidence has been taped over. Was this deliberate on the part of the authorities or just negligence?

Why are the authorities so eager to proclaim Hannah and innocent victim "in every sense of the word" but absolutely refusing to release any evidence to back up that assertion?