I think 'most other mothers' have actually said they would have liked their loved one with them overnight. But have then qualified it to accommodate the needs and wishes if everyone else, in the way that women are taught to do.
Actually I'm not that altruistic - I thought yes to my DH but fuck no to having to deal with everyone else’s visitors.
If I could have mine and no-one was allowed theirs around me I'd be happy. It's just not very likely really - at least not IME of current facilities.
Then it’s a quick mental calculation of benefits of my DH, considerable but with good staff would be less, verses the hell other visitors can be/are and having those overnight as well as during the day.
I can image other women feel the same as me - but I'm not sure that's actually accommodating their needs instead of mine- though I might express it like that as god forbid I appear selfish. That expression might well be social conditioning but the sentiment behind it isn’t.