Rose ALSO kind of wandered off a few years ago for a bit of alone time and independence in their life (though they were still reachable with some minimal effort since they stayed in the Forge and had work to do), so I don't think they would have tried to track him down or question his absence too strongly given they're also guilty of drifting away from the Alchemist herd. On the other hand tho they may have ACCIDENTALLY come across him a time or two in their wanderings, but not pressed for any info on what he was up to.

For the most part Rose is a perfumer and makes fragrance based things, so most of their products are the kind of thing you use up (colognes, candles, etc) LOL. He could have a bit of simple rose gold jewelry or some perfumed gloves he got from them, though, or maybe he regularly wears one of the fragrances they have on the market. Heck, maybe he even not-so-secretly inspired one of those.