As for Lillian Luthor, something in those pictures is making her smile, probably more than a visit from her daughter.
Their relationship became more confusing when Kara learned that Lena’s mother Lillian was the leader of Cadmus.
Lena and Kara became friends fairly quickly, even though Kara was repeatedly warned about befriending a Luthor.
And Lillian is not the only person Lena visits in prison, one picture shows her with Metallo, the kryptonite in his chest causing her face to glow green.