Excel and word saving to invalid cloud location

Your screenshots show files under both OneDrive Personal and an organisation’s OneDrive, with Upload Pending on some entries. The OneDrive app showing your personal account does not establish which location Word or Excel selected for a document. First preserve every pending file: save a copy to your own OneDrive, then open that copy from OneDrive in a browser and confirm the latest edits are present. Do that before signing out or reinstalling anything. In Word and Excel themselves, inspect the signed-in accounts and the location selected when creating a new file. For a test document, choose your own OneDrive explicitly before saving, close it, and reopen that saved copy. Microsoft documents that subsequent saves use the selected file location. If your wife’s account is signed into Office, sign it out after protecting pending changes. If it reappears, provide the Word/Excel app versions and account-list screenshots with addresses obscured.