Ok, I have lost track - I haven't been keeping up
Is this the cribber?
As far as feed going into the feed pan, my thought is to put her on a good quality ration balancer (hopefully available to you).
No grain as it will further aggravate her ulcer issues.
Can you get equine rice bran? Equine rice bran has the appropriate balance of calicum and phosphorous. Also be sure the bag says "stabilized" so it doesn't turn rancid on you.
Rice bran is 22% healthy fat and provides a horse with cool energy. I'm only give you this link for reading purposes, as I know it's probably not available to you. EquiJewel® - Kentucky Performance Products
Sometimes a bit of alfalfa is ok for horses with ulcers, sometimes it's not. My 26 yr old Arab has mild gastric ulcers; I feed him well soaked timothy/alfalfa cubes and he does very well.
Keeping any horse on more forage products than things in the feed pan is always best. But your horse will also need something to keep her energy up while staying away from oats & corn.
I also don't know what country you're in, so there may be "grain type" things available to you, that are safe for a horse with ulcers, that I am don't know about
Regarding ulcer meds: You will have to determine exactly how prone she is to ulcer attacks. You might get away with nothing more than a big daily dose of human antacids that are over-the-counter, or you may have to research what's available for horses in your region.
I like liquid Omeprazole for my horse with gastric ulcers. He hasn't had a flare-up for well over a year. The vet always sells it to me.
I use "Succeed", daily, on my horse with hind gut ulcers. His issues are very serious as he has equine metabolic syndrome and possibly lipomas.
EquiOtic might work on your horse -it's half the price of Succeed.
Here are the links to both, even though I don't know if they ship outside the U.S. SUCCEED Digestive Conditioning Program Equine Supplement Equiotic- Live Equine Sourced Microbial Probiotic- Bluegrass Equine
If you were to decide on either of these products, I would buy the dry product of either, since it has to be shipped overseas.
Hope this helps