From my understanding yes her gimmick is her tail that can spew a gas from the canisters on her belt and leave a trail of gas that prevents the enemy from healing.
Heya man, this is a really interesting project you've got here! I'm definitely a fan of the original concept & rework done by @kohyunu so I'm looking forward to seeing how you fully translate her when finished. I think you could probably use some help in getting to the finish line so strap in - this is gonna be a longer…