Simplify the following text for a Grade 7 native English-speaking person.
Original: By then quite famous , Toft was brought to London and studied at length , where under intense scrutiny and producing no more rabbits she confessed to the hoax , and was subsequently imprisoned as a fraud .
Simplified: By now quite famous , Toft was brought to London and was studied at length . Under intense study , and producing no more rabbits , she eventually confessed to the hoax and was sent to prison as a fraud .