In her own declaration, Keryn said Sumner was being held as a prisoner in his own home, and was largely controlled by a nurse. She said that as her grandfather grew older, he became more preoccupied with sex and the nurse "was using that fixation to increase his influence with and manipulate Grumpy [Sumner Redstone] and to assert greater control over the household." Attorneys for Redstone and Herzer had been close to a settlement of their legal dispute, but those talks broke down several weeks ago. While Sumner will avoid deposition in the case, Viacom president, CEO and Chairman Dauman is expected to be deposed. Attorneys for Shari Redstone had previously dismissed Herzer's claims and argued that her motives are purely financial. Trial is still set for May 6. Pamela Chelin contributed to this report.