AITA in this situation?

I have to take a diversity class for my major. A huge assignment we have to do is create a podcast with someone of a different culture than you. It's a huge assignment and it's due next week. I decided to use my friend Nate. Nate is queer and Jewish so I figured he would be perfect. I asked Nate May 28th if he could do the podcast and he said yes. We were talking about it for a while. So Nate was in foster care and got adopted but his adoptive family were horrible. Sent him to conversion therapy. Abused him. They were terrible people.

He finally met his biological dad last year and they've been building a relationship. The last time I heard from Nate at all was around June 10th where he was saying he thinks something is wrong with his dad. After that I stopped hearing from him. I would text him asking if he's still good to do the podcast. He wouldn't really reply to me. Finally heard from him last week saying he's sorry he hasn't been replying. His dad stopped taking his meds and has been having episodes. I said I'm sorry. Then asked if he's still good to be my person for the assignment. He didn't respond. Nate has not been communicating with me. He finally messaged me back today. My assignment is due Wednesday. He said his dad committed suicide. I said I was so sorry. He said he was sorry for not communicating with me. He's doing horribly mentally. That he can't do my assignment because of the funeral and everything.

I explain everything to my teacher. She does not accept late work but I was hoping she could make an exception. I won't have time to find another person and get this podcast recorded by Wednesday. My teacher said this

I was really upset by this and messaged him saying I know he's going through something right now but he had a long time to tell me he could no longer help me with this assignment and I would appreciate it if he honored his commitment. I said I know he's going through a lot and I am so sorry his dad died but we all have a lot of bad shit going on and I'm depending on him. He left me on read. I messaged him 6 other times and he continues to leave me on read. Then his boyfriend messaged me to tell me to please stop messaging him. That he is going through a lot and I am adding to his stress. Is it wrong for me to demand he keep his agreement when he never told me he wasn't going to do it? Also if he still won't do it can I report my teacher at my college to see if they can get her to give me more time?

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