I suspect my 87 year old housekeeper Mrs Humfrey's of being the one who sent me a mystery valentines day card

The card wasn't signed but I did recognise the shaky handwriting, it also stank of cabbage and mr sheen, her trademark fragrance. I think she may have mistaken my not horsewhipping her this week as a sign of a affection. What would be a suitable punishment for this wrenched womens over familiarity?