Ganush's obituary states she was born in the "Hungarian village of Szentendere." However, there is no such Hungarian village. The correct name of the town is Szentendre.
Mrs. Ganush's body gushes a large quantity of embalming fluid onto Christine's face, but in the next scene, her hair is completely dry.
In the scene where Cristine is first attacked by the Lamia, she gets a visible cut on her lip. In the following scene, where Cristine makes out Clay, the cut is gone. In the next scene, however, the cut returns.
When Christine is being attacked by Sylvia in her car. Christine locks Sylvia out of the car, Sylvia Breaks the window with a rock and then still uses the outside (locked) handle to open the door.
Crew or equipment visible
In the scene at Clay's parents home, when everyone is looking at the fly that came from Christine's mouth a monitor reflection can be seen on Clay's father's eye glasses.
During the scene in the grave, after Christine shoves the body of Mrs. Ganush off of her, you can clearly see the cable that is holding up the dummy of Mrs. Ganush.
Incorrectly regarded as goofs
Mrs. Ganush first appears to have horrible fingernails, long and brown. The next scene with her begging shows a manicured white, clean set of nails.
Christine enters the completely silent house of Sylvia Ganush. In room where Ganush lies, there is a kind of party with loud talk, laughing and music going on. Christine should've heard that long before entering the room.
When Christine tries to get out of the grave that is filling with water, she grabs onto some rocks at the corner of the grave. The rocks immediately pull away and fall into the water. Unfortunately, the rocks can be seen "floating" on the water (fake foam studio rocks).
When Mrs. Ganush puts her teeth back into her mouth, her real teeth can be seen. This happens when Mrs. Ganush attacks Christine in her car.
During the fight scene in Christine's car, Sylvia Ganush's old age makeup is uneven and in several shots she clearly appears to be much younger than the character is intended to be.