For people stuck like me at the tatoo parlor, and because the solution given by Morado was wrong:
You need to be a week day, at evening. Go in front of the shop and call Clara. Don't whistle her, like Morado said, or that pass the time to night, and you can't enter the shop. And if you whistle her at day, Janice doesn't appear in the secret shop.
You need to be a week day, at evening. Go in front of the shop and call Clara. Don't whistle her, like Morado said, or that pass the time to night, and you can't enter the shop. And if you whistle her at day, Janice doesn't appear in the secret shop.