It's not the years, it's the mileage. And we have shitloads of that.
I don't think relationships should be settled by "narrative weight", Belegar marrying a non dwarf and basicly decapitating his lineage feels, an odd choice, possible, and if it is what he wants sure, but i just don't see any hints of potential romance.
Roswita is not our equal, except through social status, she is growing, but so far she has clearly been someone to protect and guide.
I could see it becomming something else, but that would require the readers to actively vote to spend time with Roswita, instead of constantly getting distracted with the newest shiny opportunity to hoard wealth or go on adventures.
Panoramia, once she hits Magister and starts to grow more independent has potential, i find her original fangirl reaction to be entertaining which, which kinda brings up issues of its own.
But i think she has room to grow to where the issues stop being issues.
Gretel, nope, though i would love to bring her in as a semi permanent companion/student/employee.
As a crackship, Heidi, we could be the mistress if the empress.
Like, if we find someone and collectively vote to actually spend socials on them, sure, maybe something comes up.
But the seeming eagernes to ship Mathilde with any male with a pulse and a name/screentime feels weird.