[She could go on about separation. How utterly crushing it was. Watching the timelines and seeing your own sister die, and being unable to do anything about it. Swallowing hard, she tries to be happy for Elsa and Anna. No need to be bitter about something she can't help.]

You don't need to tell your sister everything. There's things I've never talked with my sister about. You'll find someone one day that you can trust those secrets with.