Zelina, blood priestess

hey not sure if a bug or not but i have got level 20+ minions and cant kill the bos. Every time she gets chuncked down she does some AOE attack and heals to full by what i assume is some kinda leech or life regain effect but because i have minions it seems to be on steroids and i cant kill them. i am level 70ish have my 3 ascendancy points and on my lattest attempt done over 1.5 million damage to the boss that i can see on the top right of the health bar atm not sure if there was more before.

Currently my character is a Lich Witch

level 69
spirit 431
skeletal warrior x3
skeletal sniper x1
skeletal arsonist x1
skeletal frost x1
skeletal reaver x2
skeletal storm x1
skeletal brute x2
Ravenous Swarm
Unearth
Flame Wall

And i find it impossible to beat these two bosses no matter how hard i try or how i reconfigure my minions - besides, the fight arena is too small and way to many things happening at the same time.

its not fun
its not engaging
its not challenging 
its just irritating 


[edit: the next day]

After 20+ attempts in total and 15min+ in the last try - i finally managed to beat them in the most dumb way possible..

I just kept running circles around the room and dodging their attacks while my minions would do whatever they wanted, i used all my health flask but stayed alive long enough to see them kill zolina - only after that i could finally engage in combat and kill zelin

However, after i got the mission completed alert, he still keep fighting and doing damage; i had to lure him to one side of the room so i could talk to the hooded one and actually finalize the mission.

Maybe there are still some bugs left in this fight; i hope they address it because up to this point the game provided and amazing experience and all my previous deaths were my fault.