If you're talking canon, she never really does. At most there is some sibling rivalry like Flan ridiculing Remi's supposed manipulation of fate.
Oh, understandable. I'm glad that they don’t hate each other’s and are kinda like real sisters... “real” in, being just happy to Ben each other’s, even though they sometimes argue about something but in the end they like each other’s, and not “real” like... a real person.