Zuri's condition left them with only two options.
First, without increasing the dosage of her medicine, they could only restrain her whenever she had hallucination, the only downside of this option was they would lose her… Zuri would be still alive, but she wouldn't be the same. She would be a shell of herself, most of the time, you needed to protect her from herself.
Because the hallucination would be so bad and as they already knew, the voices in her head were rather violent.
Second, they could increase the dosage, but because her body wouldn't last for long, they needed to inflict more curses on her to speed up the completion of the Beauty Blood, or else a decade of effort would be wasted if she died without completing the Beauty Blood.
The downside of this option would be if Zuri died from the side effect of the curses and had a backlash.