Would it be Ok?

You could ask her sweetly if it was true that she had worked in the Diplomatic Corps? It's a pity that people forget what we were taught 'if you've nothing nice to say don't say anything at all'. But my feeling is that she is a bit jealous of you. Surely only someone insecure could be that unpleasant and personal?

Just say I may be overweight but can do something about it, you're ugly, you can't.

Ask her if ignorance really is bliss.
And keep any golf balls you find that belong to her.