recending a power of attorney

The law states that a person with a sound mind may rescind a power of attorney if there is a notarized signature in the letter notifying the attorney in fact that they are rescinding the poa. My mother provided me with no such document. Only karen schweighart claimed that my mother receded it. Hearsay upon hearsay...

I wonder why litvak and schweighart are no longer listed as employees  of mcfarland. Is it because they are fraudsters? I think so...