Question

use a pronoun to avoid repeating words, if possible. my friend and i asked nessie cullen to write a song in honor of my friend and my graduation from high school.

Explanation:

To avoid repeating "my friend and my", we use the possessive pronoun "our" which refers to both the speaker and their friend, matching the plural subject "My friend and I".

Answer:

My friend and I asked Nessie Cullen to write a song in honor of our graduation from high school.