You Said You Needed Me to Test Your Medicine. Why Regret It Now That I'm Dead?

Shen Miaoyi blinded herself while testing medicine for her husband's cousin. After awakening the ability to see on-screen comments, she learned that the cousin was her husband's childhood sweetheart and one true love, and that the whole thing had been carefully plotted by the two of them. Her entire clan had also been killed by them. Even the only antidote she managed to make was given by her husband to his beloved. She hated the man, but couldn't bring herself to kill him, so she could only take her own life.