Thank you so much for all your responses!
I'm so sorry to hear you guys are going through this, too, but comforted (if that's the right word) to know we're not alone.
My MIL has an additional problem with all the extra consumption of sweets, in that she is also being treated for congestive heart failure. She was recently diagnosed after a short stay in hospital for retention of water in her legs.
My husband and I take her to the cardio clinic every two weeks, where they check in to talk with her, take her blood pressure, do some blood work, etc... so that they can tweak her medication (mainly diuretics).
Part of this ongoing follow-up treatment is that they weigh her, and have her self-weigh at home and report the numbers (almost impossible to ensure, but I digress... one issue at a time...lol). Anyway, the plan is that if her weight goes up more than a certain amount in a given week, then they increase the diuretics.
Sadly, what usually happens is something I've read here that you guys refer to as "show-timing". Again, I realize that's probably a second topic, so I'm sorry to confuse the issue.
She says she's absolutely fine, that she eats a proper diet, her weight hasn't changed at all, her scale must be broken, etc... Honestly, she is so alert, happy, chatty and charming during these visits that she seems almost entirely like her "old" self. I can't bring myself to correct her in front of the doctor/nurse, and say "actually no... that isn't true... you are constantly eating ice cream cones, chocolates and candies". I mean, I want to preserve her dignity, and don't want to 'rat her out' like a misbehaving schoolkid.
I'm not sure if the doctors are twigging to this behaviour, or if they're linking weight gain to water retention, and therefore increasing her meds. Which make her miserable. And the cycle continues. I'm honestly not sure how to approach this.
Thanks so much again for reading, and for any advice.
xo