This has been quite a circus over the past 2 days, but it appears to me that it won't have any bearing on the case unless the accused was aware of what her mother did.
As it stands now, the evidence has been handled properly and the DA will be making a judgement as to whether to present the evidence to a grand jury or to drop the investigation. Either there is enough evidence of a crime being committed to indict Kane or if not, to absolve him. I'm just glad that the evidence tampering was a hoax and that the system is working as it should.