Who is [person's name]? She's not even the admin of my Trello board.

[Maricris Andrea Quiban]

Who is [person's name]? She's not even the admin of my Trello board. How did she remove my board?

[DiMaggio Tucci]

Sorry to hear about that! Please visit support.atlassian.com/contact and select "Technical issues and bugs"

Then, select "Trello".

Then, type your question into the form for the AI chatbot. Note: it is not going to be able to help you. Trust me, just do it anyways.

Then, below that box, there is an option that says "Still need help? Raise a support request" 

Click on that. Based on your description, I believe you need the Atlassian Support team to investigate if you believe an unauthorized person has accessed your account.