Visible crew/equipment: When Mia first does the ritual, you can see the boom mic on the bottom right corner. It hides in the dark corner, but if you look carefully, you can see it come in the shot. It's easier to, depending on how dark your screen is. (00:20:40)
Continuity mistake: When the nurse hands Maren the letter that her mother wrote, in the close-up of the letter in her hand, nothing else is shown in her hand. When the shot cuts, the birth certificate she had on her has suddenly appeared underneath the letter. (01:21:45)