During 2.8’s GAA event, we received cutscenes of Kazuha’s, Xinyan’s, and Fischl’s backstories, depicting their younger selves, however for Mona, we got what (we supposed) was a visual allegory of her being a transparent bird turned into a star.
i would even go as far to say this is subtly hinted in this TCG card.
context being that albedo creates a storybook from khemia for klee to highlight her as heroine, however not only is albedo there, but mona, too.
i see this decision as a reflection of albedo’s ideal family