what are the chances that the wife actually trying to get the attention of some other guy ? like the real father of her kids, what are the possibilites that the reason she had those abortions was because the kids where not of this mysterious father, but where actually Gotou kids so she decided to not have then and where instead trying to get this other guy kids, even now the kid she is expecting could be of this other guy we are yet to see, that's why she is so sure, she could be like "yo dude that is not my husband, see aaalll those kids ?...all yours, now you can't ignore me so lets be a family" that would be beyond fucked up.