The Oracle tasked her to seek for potentials in the Digi-Caribbean with Lena and Rollins. While she was swimming, her daughters intended to surprise to her on her birthday, and Lisa hacked into the Matrix to meet her.
However this act allowed the Machines to track the Calappidae. As Maggie saw Lisa before her, and Lena and Rollins dead, she realized that her moment would come too.
She gave Lisa a shell she collected some time before, and died by a Sentinel, in front of Lisa.