What if Sarah was a witch?

1915:

Isaiah Merchant and his family were eating dinner when there was a knock on the door. Isaiah got up to answer it.

"Sarah," he said, glancing furtively back towards the dining room. "What are you doing here?"

"I want you to leave your wife for me. You said you would." Sarah said.

"I can't just yet, Sarah. All the money is hers. We would have nothing," Isaiah said, again glancing back.

"That's not important," Sarah said. "We would have each other."

"Sarah, be reasonable. I can't leave my wife for you. It's over." Isaiah said. He had to end it. Sarah was getting too aggressive.

"It's over when I say it's over," Sarah said ominously.

"Who's there, Isaiah?" his wife called from the other room.

"Nobody," Isaiah said.

"Oh, hello, Sarah," Mrs. Merchant said, entering the hallway. "What brings you here?"

"I have a delivery for you. Your husband wanted to surprise you with a painting."

"Isaiah, how sweet," Mrs. Merchant said.

Isaiah looked concerned. He didn't know what Sarah was up to, but was pretty sure no good could come of it. Sarah leaned over and pulled up a canvas covered with a sheet. "This is really for the whole family," Sarah said, "Why don't you call the kids in?"

"Kids, come on in. Your father has a special surprise for us."

Isaiah was getting more nervous by the minute, but there was nothing he could do. "What is it, Father?" their daughter, Melanie, asked.

As Sarah pulled a jar out of her cape and answered, "It's a family portrait." She took the lid off the jar while simultaneously removing the sheet from the canvas.

"I don't understand," Mrs. Merchant said sounding confused. The canvas was blank.

Sarah took the jar and threw its contents over the family making sure to hit everyone. They all disappeared and reappeared on the canvas. "If you won't leave your wife for me, your whole family will stay with me forever."

Inside the painting, the family was screaming, but nobody could hear them except themselves and Sarah.