Phoebe's followers offered their support for her parenting skills in her Instagram comments section, including newly-single Nadia Bartel who wrote "Yesss", alongside three love heart emojis.
AFL WAG Emma Hawkins also commented "love that".
"Yes indeed Phoebe......you are a super Mum," another follower commented.
The 30-year-old split with the former South Sydney Rabbitohs prop in October for the second time, and the couple are thought to be divorcing.
Phoebe and Sam, 31, were married in December 2015 and first separated late last year before rekindling their relationship in April. They split again in October.
The pair share their two children, Poppy, 2, and Billy, 1.
Sam has recently been connected to 27-year-old American waitress Oak Schuetz, originally from Seattle but now living in Sydney’s affluent Eastern Suburbs, who claimed earlier this month that she and Sam have begun dating.