A friend of yours invited you to a home party he/she arranged. However, you have just missed this party. Now you want to apologise for not attending it.

I hope this letter finds you well.

I am writing to express my sincerest apologies for not being able to attend the home party you arranged. I had been looking forward to it for weeks, but unfortunately, an unexpected family emergency arose, requiring my immediate attention and preventing me from joining the festivities.

I hope you can understand the circumstances that led to my absence. I truly regret missing out on the opportunity to celebrate with you and our friends. I assure you that I had every intention of being there to support you and enjoy the evening together.

To make up for missing the party, I would love to treat you to a nice dinner at your favorite restaurant next weekend. It would be a small gesture to show how much I value our friendship and how sorry I am for not being there when you needed me. I hope this make-up plan is acceptable to you.

Once again, I apologize for missing your party and appreciate your understanding. I am looking forward to catching up with you soon. Take care.