I'm not gonna shoot it down completely, but I do find the aesthetic used to be pretty unnecessary. I'm more into simplicity with this sort of thing, so I don't imagine I'm the audience anyways, but sometimes it's worth curbing it a little when you end up with replies like the above posts.
The main issue for me isn't that it really murders usability so much as it just doing absolutely nothing for me. It won't come in useful for the play and has strong diminishing returns in being helpful, so all I'm really gunning for is concise portrayal of what's interesting to know. I'm not exactly in agreement with the above on colons instead of periods due to how the body text is formatted in general. Comparing it to the sidebar on the left at all makes for an utterly inconsistent portrayal in all aspects between font, color, positioning, and so on; once you make the break, I don't think it matters where you go from there if you're dead set on being fancy. You've already split, so what's the difference; the meaningful change to indicate 'thing - answer' is already done through color and font, the latter of which makes me go slightly 'eh', but the former of which is nice.
What I do agree with are the comments on small text and on contrast. I'm sensitive to poor contrast, and the color pick straight up wasn't good (Not the worst I've seen though, not by far; you're not the partner I recently had who decided a dark color in the blue tones was great dialogue text for a BMR message). The small text is just a nuisance; the economy on space creates an economy on my willingness to read. Such is often the trouble with a heavy lean into aesthetic - curious choices are made where design is overwhelmingly focused on for good old usability in reading it.
I assume or at least hope more OOC substance is found in the threads she's pitched in; plenty about the character, little of use about, well, you. There's merit to making a summary of sorts for the character in the threads she's in.
Small disclaimer, I'm otherwise not the target audience; the character seems pretty limited as far as what she wants to do with the persistent focus on the canons she exists in, so I've already kinda filtered her out among other taste preferences. If you want her to be more flexible in use, may wish to make that more clear; if not, nothing that can really be done. I pretty much limit my commentary to the portrayal.