Born to Harry and Iris, Iris took off when she was wee, but Leia totally remembers how great she was. Harry was ADORED as dad growing up. Because you now, kids.
Resents mum for pissing off, things got strained with dad because they didn't know how to relate like, past childhood. Educated off world at some point. Medicine. I think she never quite got to doctor cause she joined the last year or so of the war to medic.