Ambushed when she returned home at night or ambushed when she was leaving for work the next morning?
I speculate that she may have been ambushed when she arrived home. Waiting until morning would be riskier because it would have been daylight, more people awake and about who could be witnesses, and chances are, imo, CWW and JR may have known nearly precisely when to ambush her based on a call she reportedly made to MS when she arrived at the airport. MOO, but I think that is the more likely scenario.