I thought I lost her as well. took a few game days for her to arrive at island. even then I had to ring the bell to see her.
need a companion locator for the pip-boy!!
But it's Curie. Who cares where she's at?
the people that
A: like her
B: Want to not lose any compainions (completionists)
C: have torture or slave or such settlements.
D: that kept her a robot because they like that?
E: there is no E, stop thinking about it so much.