And that is because Miorine is a puddle of joy in the anime right?
She's a textbook tsundere
But that's just the thing, I don't think she is one. Tsundere characters tend to be easy to read. They overreact to situations, it's clear to the reader that they're in denial. Miorine, if anything, underreacts. While there are scenes which establish that she cares for Suletta, most of the time you can't tell what she's thinking or feeling.
Even this particular story seems to acknowledge that, as the first panels are there specifically to tell us how Miorine felt during some moments in the series.
So yeah, she feels more charismatic in here, imho.