Gmail Display Name Using Senders Nickname

Just had an embarrassing moment. On my GF phone she has a nickname for me instead of my name in my contact info.

Now when she sends email this Nickname appears on the To line on all outgoing messages. Problem is when she emails other folks and cc me, like business folks in this situation, the display name appears as my nickname not my real name. How do one avoid this?

Also, it looks like any correspondence that I am having with these folks the display name is this nickname. How does one go about fixing this?