Police say the teenager told a friend about the alleged abuse, who then reported it to their parents, who then went to Mt. Laurel police.
Officials say the incidents allegedly occurred between March and May 22, while others were in the home.
Lessig is being held in the Burlington County jail in lieu of $30,000 bail.
Anyone with information on the case is being asked to contact the Burlington County prosecutor's office at the following numbers: Normal Business Hours, 609-265-5771 Nights and Weekends, 609-265-7105 (Central Communications) Secret Witness Hotline 609-267-7667
