Cornelia arrived after a long night in the city where she had to go to in disguise, just to get Natalie's ex-husband's blood which she eventually brought with her. She had managed to lure him and cast a spell on him. The man seems to be a womanizer and she went to approach him in form of a young woman.
Cornelia finished preparing the equipment for the spell she was going to use on Natalie today after she drinks the blood. Mama paps suggested they make preparations for whatever would happen if the blood works as Natalie was going to wake up much stronger than before and she might harm them or try to get more blood from people. They were making preparations in advance since they would carry it out by Tonight.
She poured the grey ashes round to form a big circle and then placed the candles on it gently.
After that, they both went inside to wait till the night comes.