Twintania is very much a group-oriented fight. Your entire group is basically a machine. One loose bolt and the entire thing can and probably will fall apart.

Someone doesn't notice Conflag and gets others trapped? Wipe.
Someone doesn't stack for Divebombs? Wipe.
Can't kill the snakes in time due to low DPS? Wipe.
Group standing too close for Twisters, or not coordinating where they are moving? Wipe.
People not standing as far as they can possibly be for Dreadknights? Could survive if DPS is high enough. But if the target does die, and a melee DPS gets targeted for Unwoven Will after the initial target dies, its going to be hard to recover two DPS.
The entire fifth phase, while people claim is the "home-free" stretch, you can still wipe from Hatches and Liquid Hells especially if people put the Liquid Hells underneath the Neural-links.

Just take it one step at a time and you'll eventually get her down.