to you, first and foremost, MADAMCLEOFET. You've been avalanched by some very stressful situations, as you described them. It may well be that you could use some minor adjustments in the meds you take; I'd talk to my prescribing MD about that and see. Sometimes, you can get a huge assist that way when the stress is cranked up.
It is quite stressful to be the executor of an estate - paperwork out the proverbial ol' wazoo! I've been in that position... if it gets to be too much, you can always get some assistance from a good CPA. I had to do that myself, and it was a real boon. That, on top of losing your mom, would've been stress enough, but you've got considerably more stress than that - the day-to-day variety. And then there's the stress of the weight gain...
I liked what ARCHIMEDES said re the support personal at your WLS practice; don't hesitate to use them. They're familiar with some of the stressors that can feed into weight gain and can help you deal with them.
There are many avenues here to look into, and I know that right now's the time when you least feel like it. But if you could manage to do just one proactive thing a day to further your progress, I know it would all add up for you down the line...and you could look back at this time with a huge sigh of relief.
So glad you felt comfortable bringing up this complicated situation here, and I wish you much luck, strength, and peace in the days to come. Also, if you can, carve out an hour's worth of "me" time every day. I know from my own experience what a stress-buster that can be!