She is no longer with WMDE.
I am not sure if the following list complete (e.g. I am not sure if any LDAP account exists). Please advise on what places should also be checked.
- Disable Phabricator user samuwmde
- Disable Samu (wmde) account(s) on WMF wikis: https://meta.wikimedia.org/wiki/Special:CentralAuth?target=Samu%20(wmde).