That's because there are so many different versions of KB2952664. If your wifes' PC was on automatic update it probably has more than one version installed on top of one another. The regular uninstall option only uninstalls one of them. Did you try the PowerShell commands higher up in this thread?
To find all versions installed:
dism /online /get-packages | findstr KB2952664
To delete one version (6.1.1.3)
dism /online /remove-package /PackageName:Package_for_KB2952664~31bf3856ad364e35~amd64~~6.1.1.3
Good luck!