Change one word - AI clone

Hi! I’m hoping someone here can help me. I’m trying to change one word in a recording of my late grandmother singing happy birthday. Changing the name from my name to my mom’s name. I have lots of recordings of my grandmother’s voice (over 3 minutes of her talking) but none saying the name id like to have in the birthday song. Is there any possible way to clone her voice just for this one word? If so, any ideas …

artificial birthday change her mom recording voice word