uhhhh, did you even read her post properly? her mother in law suggested to let her son stay EVERYNIGHT, meaning, mon-fri whole day stay with at her place n only bring her son back on weekends.
as a WORKING MOTHER, im sure we already have very little time with our kids, by the time we end work, its already 6, then most kids sleep at 9pm (on average, some earlier) so meaning we only have arnd an 1 hr to bond with the kid, minus-ing the travelling time n washing up etc, so of cos we want to CHERISH the time we have.
n TS son is very young now, best time to bond n keep a close connection with her son is NOW, so that her son will still be close to her.
well, ULTIMATELY, kid belongs pkshl, she wants to bring her son home everyday, why not? it is HER SON. so what if that is her inlaws? inlaws. maid or neighbour, all also not the kid's mother.
well, if your kids prefer to stay with your inlaws rather than you over the weekend, then it is your kid's choice n preference. but now, TS son is still too young to make that choice, n im sure TS would prefer her son not to prefer staying with her in law but close with her at home.