Our frequent unofficial procedure used to be use Descend Now for a minute or so to prevent one large thermal shock and instead make the cool down a 2 stage process. It sounds like she has an idea of her own. Best thing is remember, and do it her way when you fly with her to stop the bitching about it! It really isn't worth making an issue of- some would say both ways were 'right' and neither way is 'wrong'! In the scale of operating a 737, the difference is irrelevant. She won't thank you for pointing it out, so just say 'yes Ma'am!' and smile!
Long ago, in a place far, far away, on the old 747s, the flight engineer used to chop the throttles violently to make automatic bleed valves operate and it was thought it helped prevent the surge-prone engines surging, but I don't remember the procedure lasted long.