There are allegations of an argument, that Carey thus far has failed to disclose.

…neighbors have cast doubt on [Carey’s] version of events, with one saying that he heard an argument from next door just before 2pm. – Daily Mail

And abuse:

And a best friend who faked her pregnancy.

A woman suspected of faking a pregnancy then murdering her best friend to snatch her newborn daughter has been named as Magen Fieramusca. Fieramusca, 33, was arrested Friday, hours after a body believed to belong to missing mom Heidi Broussard was found in the trunk of a car in Houston, Texas… An autopsy is underway to confirm her identity and establish how she died. Her suspected killer is due to be arraigned in court on Friday morning. A second woman is also in custody, but has not been charged with murder. Prison records show Fieramusca was initially arrested for driving offenses. –Metro