Momo

The first thing I'd like to say about her is that whether or not she willingly gave up Celphi she isn't really his mother. She wasn't involved in his life whatsoever while he was growing up. She didn't raise him or show him the love of a mother though she may have wanted too. Not just me but numerous members of my family were adopted after being given up by willing and not willing bio parents.
Another thing is that yes, she's a complex character, but that isn't why some people are upset with her (some are cus they can't handle dark complex female characters). While I understand her reaction that doesn't make it justified. She is actively wishing equal harm (death and ceasing of existence) on both people who did and did not harm her. She says cruel things that attack other people's trauma and play on their weak points. She has a negative outlook on things and shares it without being willing to hear from others or what they have to say. On the other hand she loved her husband and did everything expected of her and yet still was treated like breeding cattle that could be replaced and had to fear dying throughout her pregnancy. That can definitely affect your relationship with your child and I believe have a negative effect on the child (one of my aunts was depressed during her pregnancy and it lead to minor complications and less minor effects on her child). She then lost the only person that made being apart of that family bearable. I can only imagine by this point they had already consumed her life (as compared/differing to live) and world.
Her response to her experience makes sense, is reasonable, and very realistic but that doesn't make it ok or just. I like her from a writing perspective but as a character/person am on the fence. Suffering isn't a reason to be hurtful or cruel to others. Though I do understand freaking out when people essentially hunted her down and stayed in her home doing go knows what while she wad away and who were from a family she hates. And that she had to muster up courage to go see them to warn another woman before she was too hurt only to be shown what she believed was ignorance and naivety (and genuine rudeness plus ignorance).

Everyone seems to think lately that either this will end in polygamy or purple hair and black hair will get back together. To me it still seems it is going the same route as before; both will want the mc (with the black haired one mostly likely "winning"). I mean, purple hair literally just said black hair was just a really close friend and that their relationship was irreparable.