Where was Marie Massereene CORDNER-JAMES buried or cremated in 1949?

[philipsearching]

Back in 2012 Rootschat heroes found the burial of John Henry CORDNER-JAMES
https://www.rootschat.com/forum/index.php?topic=627533

I am now trying to find what happened to his estranged wife Marie Massereene CORDNER-JAMES who died on 28 September 1949 at Dorking Road, Epsom, Surrey.

I wondered if she might have been buried with John at St Andrews, Kingsbury, Middx, or in Epsom, but I can't find her.  Or was she cremated?  Given the complex family dynamics, anything is possible!

Philip