I will now translate from the Sefer ???? ????, on Parshas ???, on Passuk ?, Perek ?, on the verse, ???? ???? ??? ?????? ???? ???, (and the Cohen shall take from the holy water in a earthenware vessel).
This needs to be understood, as water alludes to in all places to abundance and kindness, and all the more so ‘Holy waters’, how then is it qualified to damage?.
One can answer that the Sotah in degradation turns Mercy into Judgement-as it says in the Midrash in Bereshis Rabbah 73,2, woe to the wicked that turn the trait of Mercy into the trait of Judgement-this is explained that the aspect of Mercy in relation to the trait of Judgment, that is the aspect of Mercy is worthy to become judgement for the wicked, because this is good for them and good for the world (see Mishna Sanhedrin page 85, Mishna 5), and this is the nature of the ‘bitter waters’ that is Kindness which its outcome is seen to be bitter to the receiver, and to strengthen this matter, we make her drink the waters, we erase the Name of God inside it, the trait of Mercy from above, that even Judgement that comes from above, Judgement is its essence, and still the aspects that come from that is a trait of Kindness-how great is the sin of those that use them for impure purposes.
And this is what the Ricanti writes the reason the Sotah dies is because to correct the falsity, because the Holy Name is erased in the water, The attribute of Judgement is ruined (Michtav Eliyahu 8,3), not just ruining the attribute of Justice but also the man who sinned with her, as also his stomach distends.(Yalkut Reuveni).