Better not mess with this lunatic gila monster! The others already know why they shouldn't get between crazy Berenike and HER food. That's why they wait for the right moment, but always this glutton comes around the corner and grabs the loot.

Leopard geckos aren't social, they don't share. It can also come to biting and stealing out of the mouth. In order to avoid conflict, inferior females signal their submissiveness by tail waving (often towards / touching the others head) and closing the eyes.
In nature, they mostly live alone, but it comes in favorable locations to aggregations. So in their behaviour, they are fundamentally peaceful towards conspecifics (males only tolerate females). It happens that a female feels disturbed by another female and therefore wants to distance her. If the terrarium is too small and doesn't provide enough evasion space, it can be fatal. The dominant female then tries more and more pushy to chase off the other gecko without it being able to escape. The disappearance of the loser is an important part of the communication and must always be possible.

The back wall of my terrarium consists entirely of caves, so there is rarely any reason to fight. Usually my geckos give "kisses" when they meet and hang peacefully together. To avoid quarrels about food and to be fair, I usually feed by hand. But I want them to live their entire behavioral spectrum, so sometimes they can hunt. (The video shows a 10x timelapse.)