Scam letter

On Thursday my teacher got a scam letter from Emily Park. Here is the link to the letter.
Link: Scam letter

What this letter is about:
So this letter is from Emily Park and it is to an Anonymous person and it is about someone who had lost US$75,00+ from scammers in Africa who talks to the FBI and meets a woman called Mrs. Maria Fernandez who gives back US$1,300,000.00 to Emily park. Then it says to participate to get the money you have lost or to give your money to be safe.

I've got 2 reasons this is a scam:

Reason 1: Emily Park's email changes throughout the letter.
Reason 2: I says she actually talked to the FBI about this but it is very unusual to talk to them unless someones murdered someone other you would go to court about this.

I have got 2 pieces of evidence that this is a scam:

First Emily Parks email changes,
so here is the first one,



Here is the second one.



Second it says