I'm trying to remember the title of a manhua. It was historical fiction, maybe fantasy as well?
In the first chapter, a woman is sitting, waiting on her husband and lamenting the fact that he is so distant with her and their son. He is complaining and writing off everything she brings up, including her asking him to visit his son more. He says something along the lines of "I saw him last week." She then remarks internally that she has been given poisoned tea again, but while other times she's been careful, this time she drinks it and allows herself to die. The husband had turned to leave, but seeing her collapse makes him come back. She says something along the lines of "Let's not meet in our next life," or "I hope we never meet again."
My memory of the art style is foggy, but I believe the husband and son were shown and they both had black hair; it's possible she did as well. I think she wears a green dress when she's meeting with him.
I also know one other point is that the husband becomes angry when a relative, an aunt I think, admits to doing it with little remorse, but this is in a different chapter.
It had a fantasy element; I believe it was time regression rather than reincarnation. It hinted that time regressed for her, but that her husband may have had something to do with it, as he gets revenge on the family member that poisoned her tea.