You might request she remove her new supervisor’s credo from the wall behind her desk. It’s one thing to be seen as always being on the cutting edge, but the new credo might have some detrimental effect on her staff that she just cannot see for herself:
The waterboardings will continue until morale and productivity improves.
No, he eats everything, not just earth.
glee, why do I keep hearing "Coffee is for closers in your reply?

Brilliant response.
Don’t forget to add, “There’s no I in team”.
And no U either.
But there is a ME, not sure what tells us, but there you go.
There is a U in dumbass, though.
And there’s plenty of meat in team.
And you can’t spell funeral without FUN.
Nor slaughter without laughter!
Suggest to your boss that since your team is doing so well you thought you could help out the firm by giving a talk next mangaement meeting about how to motivate salespeople.
Mention the lunch thing at least six times, careful to look quickly away from her each time.
Enjoy the squirming.
Take her team out for pizza. Tell them how sorry you are for making them feel badly about their manager, that you understand she feels undermined by your generosity, and you hope this gesture will restore balance.
Afterwards tell her what you did and repeat the underlined part, be sure your manager is within hearing range when this happens.
sneak a copy of this Motivating-Employees-for-Dummies onto her chair.
Any followup on this yet?
I assume you mean from me?
The manager in question has gotten in trouble with our boss’s boss for being an idiot. Our boss has asked me – ME, personally – to help her improve her management style.
Too perfect!
I assume you’ve forgotten how very, very much I hate this woman.
Admittedly she’s more than easy on the eyes, but that doesn’t matter. She could be Monica Bellucci walking around naked and it wouldn’t matter.
But think of the opportunities for fiendish, evil, magnificent revenge! I know you’ve given up being a super-villain, but this could be your chance to dip back into it. What’s even more satisfying is, no matter what you do to her, you can bask in the knowledge that it’s only a tiny fraction of what you could do. Just remember to get out of her earshot before you indulge yourself in an evil laugh.
Fool of a Took!
The wise villain indulges in the evil laugh only at the open-casket funeral of the last of his enemies!
You’ve been here quite long enough to know that details are required.
The details of the idiocy that gained the boss’s boss’s attention.
Her reaction to being informed that she is now under your tutelage.
Your reaction to being informed that she is now under your tutelage.
Any other details that we would find humorous.
[del]In iambic pentameter.[/del]