Really, those "police and other investigations" on her site are pretty lame, even for a "psychic".
1. She claims to have "pinpointed" the body of a murdered girl, several years after the murderer had been convicted and sentenced. The body has not been found, despite Sally's "information". Names have been changed to prevent any of the claims being easily checked.
2. She claims to have helped prevent a theft of designer sunglasses, from a firm that appears to have no web presence at all (Googling for it only brings up the reference to the firm on sally's site). She suspected the same five people that a private detective had already singled out, presumably without the help of paranormal abilities. Again, the fact that the company in question does not seem to appear on any Google search (I doubt that they're selling many pairs of sunglasses) makes the claim impossible to check.
3. She has failed to find a missing dog (although she thinks she might have heard it), which returned home under its own steam. She did find a badger set though, so she's claiming a hit on the grounds that the dog could have been down there. Again, there is no way of checking any of this.
4. A "psychic interview" with the Kray twins. No investigation at all.