Considering it's Victorian-inspired society, the norm for families with means was to leave children to be reared by wet nurses, nannies, and tutors. It would actually be highly unusual for her to be actively involved in her son's life (...which might explain why the 19th cen. was so chaotic lmao, full of dysfunctional people).
To the modern eye she was definitely an emotionally distant mother and that's unfair to Vincente. But it's equally unfair to tell her to give up her social life and distance herself from her friends completely just because she's a mother?? Doesn't matter if she's 22 or 42, she's allowed to have a life.
Why was her husband controlling her going abouts and giving her permission? That's incredibly misogynistic. The fact that this was happening is probably why she started having feelings of resentment that was misdirected towards Vincente in the first place. I'd like to know if her husband was still meeting his friends and not dedicating 100% of his time to the kid. Why does responsibility solely fall on the mother to martyr herself to the moral goodness of raising the family? Reminds me of the whole debacle of the South Korean government releasing a set of motherhood guidelines just this month that instructs pregnant women to cook for their husbands, lose weight by performing household chores, "hang out clothes that you wore before getting married or small-sized clothes that you'd like to wear after giving birth and look at them when you want to eat more than necessary or want to skip workout," etc.
If this series wants to take contemporary standards on the duty of parents to provide both financial and emotional safety, they should also go by progressive ideas of modern motherhood