Sympathy. This is sort of fiasco that makes many have punting phones, and avoid home punts (not an option for me).
I think my immediate reaction would have been one short polite text (no point in a slanging match) telling her 1/ No. it wasn't me 2/ If I get any further contact from her or her agents demanding money I will go to police and tell them I'm being black mailed.
None of this..."I may contact police...". It smacks of uncertainty, and she may well carry on.