School official Pamela Smart confessed she had fallen in love with a 16-year-old student and decided to kill rather than divorce her husband because she didn't want to lose her home and her dog, her intern testified Friday.

Cecelia Pierce, 16, a junior at Winnacunnet High School in Hampton, where Smart was media director, said she came to realize Smart was serious as the discussion of plans to murder Gregory Smart continued."She said she had a choice either to kill Greg or to get a divorce, " Pierce said. "I told her to get a divorce, but she said she couldn't because Greg would take the dog and she wouldn't have any money or a place to live."

Pierce also testified that Smart told the teens who later confessed to the murder "not to kill Gregg in front of the dog, because it would traumatize the dog."

Pierce's testimony came the day after the jury spent several hours listening to secretly recorded conversations between her and Smart.

Pamela Smart is charged with being an accomplice to first-degree murder in the May 1 slaying of her 24-year-old husband at the couple's Derry condominium. Three Seabrook teens have pleaded guilty to second-degree murder for carrying out the slaying.