After historic love letters start anonymously appearing in Kallie Sharp's mailbox, the hobby farmer searches for her secret admirer and opens herself up to love.After historic love letters start anonymously appearing in Kallie Sharp's mailbox, the hobby farmer searches for her secret admirer and opens herself up to love.After historic love letters start anonymously appearing in Kallie Sharp's mailbox, the hobby farmer searches for her secret admirer and opens herself up to love.