The Duchess / Countess was forced to return to England after her late husband's nephew, Evelyn Medows (died 1826), brought a charge of bigamy against her in hopes of establishing a legal rationale for challenging Kingston's will. She attempted unsuccessfully to have the charge set aside in December 1775 by reason of the previous judgment in her favour. She was tried as a peer in Westminster Hall in 1776, and found guilty by 116 peers without dissent. Absconding with her fortune, she hurriedly left England to avoid further proceedings on the part of the Medows family.