In her younger years, Rosalyn was merry, quick of mind and eager for adventure, nothing like the gentle mother who had died giving birth to her. She had inherited her father's strong will, but she lacked his sterness, and usually got her own way by teasing and cajoling instead of frowning.
Following the incidents on Dorne, where Garth had forced Rosalyn to drink the forgetting potion, Rosalyn was left pale, cold and rather lifeless, and in her eyes, there was a hard, empty glint. She grew sterner and harder with every month that passed, and while she regained the colour in her cheeks, the hard glint never faded from her eyes. It was as if she had left the warm, lively, loving part of herself behind in Dorne, and it was lost to her forever. But while her heart was lost, her iron will and her love of adventure remained.
Rosalyn was quick of mind, fearless and had a strong iron will which she had inherited from her father. Following her first sea voyage, Rosalyn accompanied her father on his every voyage, and quickly proved to be an even better trader than he was, and in time it was she who captained his second ship.