Hello and welcome to the forum.
The mark you are having difficulty identifying is a leopard's head which means the object was assayed in London.
You have correctly identified the year, 1897, and the 925/1000 silver.
Silvermakersmarks.co.uk shows that Mary Chawner's mark was first registered in 1834. I have some doubts that she was still active 63 years later.
The photos of the maker's mark are a little out of focus, but if there is a 'dot' in between the M and C, it may be M Chapman, Son & Co Ltd registered 1892.