The knee-jerk reaction of many men is to say - at least she recognizes the problem, is taking responsibility and trying to rectify her wrongdoings.
Allow me to give you a different perspective. This is good old manipulation. This is one of the many ways in which women redpill men.
Let's begin with a simple fact: sex happens on her terms. This was true before the baby, during the 3 years of almost no sex and it's just as true now as it was then. Nothing changed in this regard and nothing will change. Sex always was and always will be on her terms.
It doesn't matter what he thinks or feels. His thoughts and feelings don't matter and they never did. In the beginning, she was in the mood and therefore, sex happened. After the baby, she was not in the mood and therefore, sex did not happen. Right now, she is afraid of losing her marriage and that's why she wants sex to happen again.
It always was about her and it still is. No fundamental change occurred here.
Next is the fact that sex is a bargaining chip and a powerful weapon for her. She used it to get him hooked and now she will use it to kook him again. As soon as she feels comfortable once more, she will lose interest once again.
She actually can turn around her marriage right now. If she takes responsibility for her past actions, apologizes for them and truly changes her ways. However, it will only work if she truly begins to treat him as her number one priority. This is unlikely to happen.
What's more likely to happen is that she lures him back with a ton of wild sex, but then shows him that 1. Everything is still on her terms. 2. That he is not her number one priority.
That's when her marriage will be doomed forever. As so many women before her, she will cry that it isn't her fault that she wasn't in the mooooooooooooooooooood and yet another man will be redpilled by yet another woman.
So before you feel all sorry for this bitch, please understand that nothing really changed. She made her bed and she's just afraid to lay in the stinking shit that she put on the bed.