Welcome...and I'm afraid you aren't going to like my answer...
There is no remedy to change the cat's behavior.
Your cat is exhibiting a very strong instinct to dig/bury her waste.
There is just no fighting or altering genetics and/or instincts. The best we can do, is compromise and cope, helping the animal to do what its' instincts are demanding it do but in a manner that *we* can live with.
This is along the same lines as their scratching/nail-sharpening behavior. Their instinct is to scratch. We don't want our furniture scratched, so we give them other, suitable things
, to scratch on and reward them for their good behavior.
You will need to give this kitty something more suitable to her behavior, and one that you can live with.
Be happy your cat doesn't have the problem *I* had to deal with...which was a cat who would start pee-ing in the squat position, and slowly raise his back end until he was standing straight up...and still pee-ing!
Hooded litterboxes were a MUST because of him.
How tall is the table you currently keep their box under? If it is a regular dining-type table, you can easily fit a jumbo-hooded litterbox under there. Even better, would be placing an office chair carpet protecter and a small whisk broom/pan to keep there and sweep up scattered litter at every cleaning. Best would be a litterbox with some type of flap-door barrier that would keep the litter kicked in that direction landing inside the box, too.
Some members use Rubermaid/Totes, either having their cats jump in from the open top, or they cut an entry hole in the lid or side. When selecting one of these, find one that does NOT have any interior supporting ribs that could hinder scoopablilty.
Best of luck,