The man doth protest too much, methinks.

@rush - if she was in fact still alive, the whole point of having her foot amputated would have been for it to be found, resulting in her being declared deceased.  Once law enforcement then ceases to try to find her, she has a better chance of continuing her life with the missing millions, not to mention her husband receiving her $1 million life insurance payout.  People have done far more for far less.  There would be no point amputating her foot & then disposing of it 'properly'.