Scammer wizards, can you help me figure this out?

Yesterday my cousin in Seattle sent me an email. She said she’s been getting these odd messages from me, in email, for months, and that she doesn’t think it’s me.
When I looked at it I can promise you it isn’t me! However, the original email comes from a Clair Harford. I only come in in the middle,in the body of the message, where I supposedly share some silly thing. What is going on? How do I fix it?

Here is a screen print. The only name that hasn’t been altered is the Clair Harford person, who Lisa says she doesn’t know, either.