She got visibly fatter since this stupid ass shit New Year's Eve live, when she got herself caught red handed cheating on poor Malan with (now obviously pregnant) James. I don't think she has ever had a year of gaining that much, or at least disabling her body to this extent. Whatever weight she's currently at, let's make it clear: she needs to use walker to move around now, and when she's not using it (at home or to take a walk to the restaurant from her car to pick up her food) she can barely keep her balance. She's just wobbling, and her movement doesn't resemble walking (even slightly) anymore. She's just eating herself to death at this point. She's a lost cause, and I can't imagine anything that would be able to wake her up at this point.
She may be able to hit 500lbs, but I highly doubt that she'll be able to live to see 550 on the scale. Her overall condition is dramatic.