In a way, that incident had given her an idea to use on the other civilians who were affected by the fox spirits.
Should she be thankful that she was able to come with this idea?
However, because she replicated the elixir in the first place, Ding Wu and the others were now almost free from the fox spirits. Of course, the last push would be from the monk, Master Deng Zhu, only then would they be fully freed.
Still, this was only a temporary solution. It would just dissolve any current hypnosis on them.
But if they meet another fox spirit next time and this ability of theirs would again be used on them, they would still be susceptible to it. Unless they have the pill that could prevent this, the one that was made by the Sun Clan which was the source.