Did Darkstar cut Myrcella

[John_Cutesack]

In a feast for crows ser arys oakheart tells Arianna that he switched myrcella with a body double and left the girl in sunspear to take her place. This girl's name is Rosamund and she is a lannister of lannisport and is one of myrcellas handmaidens.

I don't know how possible it is that ser arys actually brought Rosamund with him instead of myrcella knowing that arianne's plan was considerably dangerous.

Arianne's party has some conversation with who they think it's myrcella and she seems to be legitimate, although maybe the girls just spend so much time together that it's easy for Rosamund to pretend to be myrcella.

I don't know, maybe I'm grasping at straws but it at least feels like it's worth giving some consideration.