1868 - obtained patent no. 2877 for the Lowe-Vansittart propeller. 1869 - the Admiralty trialled the propeller on HMS Druid. 1871 - the propeller is awarded a first-class diploma at the Kensington exhibition. 1876 - presented a paper at the Association of Foreman Engineers and Draughtsmen, the first woman to do so. 1882 - visited the North East Coast Exhibition of Naval Architecture and Marine Engineering at Tynemouth. She was, subsequently found wandering in a confused state of mind and was committed to Tyne City Lunatic Asylum, where she died.