Jbar,

You clearly don't know how notarizing a signature works.

Here's a clue:

She would actually have to sign IN FRONT of the notary public in order for her signature to be notarized.

Her husband can't go and take her signature after the fact and get it notarized.

The notary of public would lose their certificate to notarize signatures if they notarize a signature without the person signing in front of them.