It’s probably Grace Lauren. She would hand out random coins. We’re going with that. There, lore speculation over.
Players will receive 10 Lauren family coins every hour up to a max of 50 per day, and 30 of those coins will earn you a special Lauren family giftbox. Each giftbox contains one of several items, ranging from a small number of Memory Fragments to an Ogre Ring or a special weapon box. You’ll be able to earn a lot of these boxes during the event, too. So will you roll the dice and see what you get? Why not? It’s free stuff. Free stuff is always good.
Source: Official Site