Sensitive titled word doc now appears in company's onedrive and won't delete!

I bought myself a laptop that I also use at work. I have to log into onedrive to access my work's server. I have been very careful with not putting personal stuff onto this laptop, and if I do, I make sure its not syncing to the work's onedrive. As if someone is playing a trick on me, somehow a cover letter I was working on for a potential other job now appears if I log into my work's onedrive account online and it won't let me delete it! I no longer have access to the cover letter as it was deleted! HOW DO YOU DELETE THIS?!!!