Let’s be realistic here, Alex isn’t the only other person in the world who could mind Lana if Kiera worked.
Family could be with him if she worked weekends or even during the week- he could visit his own or her family or friends.
Also there are such things as crèches, babysitters etc, which, granted cost money but other people make it work. And I’m sorry but don’t have children if you can’t afford to pay bills and/ or don’t have a stable income from somewhere.
In saying that, doesn’t she get a small fortune from patreons for doing sweet bug all? She could easily tap into that and rip people off encourage more people to “support” her.