Public alarm at James's Catholicism increased when his wife, Mary of Modena, became pregnant for the first time since James's accession. In letters to her sister Mary, Anne raised suspicions that the Queen was faking her pregnancy in an attempt to introduce a false heir. She wrote, "they will stick at nothing, be it never so wicked, if it will promote their interest ... there may be foul play intended." Anne suffered another miscarriage in April 1688, and left London to recuperate in the spa town of Bath.