It takes a few hours to cover everything that will be necessary knowledge for Daisy, but she quickly understands about the nature of the system and her limited ability to interact with it.
Her inventory is a whole four slots, so she can't actually carry much, but it's better than nothing. At least she can equip and unequip her clothing, which resets it to perfectly clean. That alone is a wonder to Daisy, and she has declared it the world's most useful function.
Cain also granted her Misha's Tailoring skill, to see if it would activate a system in a Puppet with a soul, but no such luck. He will have to try again, using a soul that already had a system interface to see what happens.