To elaborate on this question a bit more.
It can not be taken from you. Your domain is yours and any email you create for it is yours. Just because they are sending to or as a specific name does not mean they have taken it.
See response above.
You will not be sending it. When someone sends an email as if it were coming from your account, the thing that people look at are the headers and the IP address the email is coming from, not the domain name itself. You have nothing to worry about if you are not sending it yourself.
Hope it helps.