Emerald green floor-length gown with rhinestone belt

Found this emerald-green floor-length gown this afternoon around 2:45pm behind the Valley Library on SW 26th Ave in Corvallis. It's a women's size 8–10 satin dress with a subtle shimmer and a rhinestone belt at the waist. The gown is in great shape—no stains, just a few light wrinkles from being stored in a bag. Inside the hem is a tiny embroidery that reads ‘M.L. 3’, which might help the owner identify it. If this is yours, describe one unique feature (like the embroidery or the belt) and we can arrange a safe handoff.