You can remove a household member for your Google Nest "home/structure" by going to Settings | Household in the Google Home app:
If you have an ummigrated Nest Account, you might still be able to do this by going to Settings | Family in the Google Nest app. (Our account was migrated 2 years ago, so I don't know if this works for unmigrated accounts.)
Just checking in to make sure that you've seen our responses. Please let me know if you have other questions or concerns as I will be locking this in 24 hours if I won't hear back from you again. Feel free to start a new thread and we'll be happy to help.
I appreciate the help, Princess.