Publicly mourning the rift has shown another side to the public as she previously called out her kids as "hateful" and claimed they were out for her money after their appearance on "60 Minutes Australia", which resulted in many fans turning on her.
At the center of the feud with Federline is custody. Per TMZ, prior to the conservatorship Britney had been stripped of custody and given only supervised visits along with randomized drug testing.
However, with the conservatorship in place she was able to regain some semblance of dual custody of both kids. But TMZ notes that changed over time as the boys began to spend more time with their father.