According to FreeBMD on 18 June 2007 there were no Armiliar Battys and four Amelia Battys born within Leeds:
Sept 1844 and Sept 1848 - This would make her 52 or 56 when she gave birth to Janet, youngest daughter. Sept 1889 - This is 5 years after she was married. Dec 1867 - This corresponds within 1 year of quoted ages on 1891 and 1901 census returns.