She died in 1896 but was buried in 1909 in Döbling. Likely that the body was moved to a new family grave?
https://www.friedhoefewien.at/verstorbenensuche-detail?fname=Anna+W...#!
Link to death notice
https://anno.onb.ac.at/cgi-content/anno?aid=wrz&datum=18960616&...
