What type of info are you looking for? If you are looking for children born to the marriage we can’t post any such info as they are probably still alive
How do you know she is deceased? When & where did she die? A tree on Ancestry shows she died 16/7/2018 Chichester Sussex but GRO online has no such death in Sussex but there was one in Surrey
Have you contacted the tree owner for more info as the tree seems very comprehensive