After Raven confess that she is not dating Eddie to her cousin they go up stairs for a talk, and the kitchen is dirty with pots and pans on the stove, with restaurant containers on the counter. When they come back downstairs after talking in the bedroom coming back to the kitchen after a couple of seconds it is completely clean with no pots on the stove or restaurant containers on the counter when they come back. Nobody was there to clean up.
In the opening scene while Raven is talking to Chelsea and Eddie she is not wearing any shoes. Then the camera cuts to Andrea entering and cuts back to Raven and she suddenly has shoes on.
When Raven has the dead crab in her hair, you can clearly tell she is controlling it and making it move around her hair. You can also see her operating the crab to make its claws move.