Elite Donatra traded in her low refire plasma torps for fast refire photon with an identical cooldown torp spread 3. This means she can spam photon spreads every 6 seconds. Each photon can do 25k damage and each player in her front gets hit with 5 photons per spread. Hope you can survive 125k worth of damage.
If you don't want to get shot keep an eye on who she is targeting via the target icon on top of the screen. Then stay away from them. Or stay at her back. Also she seems to stop firing the torpedoes when she gets 50% damage.