Ascent to Power Bug

So, I lost the coin (Balbala's Barya) and now I cannot complete ''Ascent to power'' quest. As Zarka requires me to talk to her while I have the coin and since I don't I cannot progress the quest to even unlock a teleport to
''Trials of Sekhemas''. Which means I can't even enter and do any trials.

I have also tried to kill Balbala multiple times on Act 2 and Act 4 and she won't drop it.

Any solution/suggestion would be appreciated.