(1) He screwed up or he doesn't trust the authorities, or both. I'm leaning more toward a screw up.
(2) I'm thinking that the alleged settlement negotiations may have involved the mother and maybe the daughter didn't want to hear about $$ (or else she wanted $$ and wanted the prosecution to go forward). Maybe it was Kane's people and the mother colluding to screw up the case in exchange for the payout that the mother negotiated.