E-mail cancelling an arrangement

Dear Kevin,

I’m so sorry I couldn’t contact you before, it was impossible for me to assist to last Thursday meeting.

I’ve been thinking over, about the job you offered me, and sadly I have to refuse.

I don’t want you to take me wrong, It has been a pleasure and an honour work with you this three years, I don’t want you to think that I’m declining because of a lack of interest or money problems, I’m aware that nowadays (and more in a sector like ours) we have to work for a pittance or even for free.

I cant accompany you in this foreign business because of my brothers illness; unfortunately he is dealing really wrong at this moment an it would be unfair and selfish leave the rest of my family the responsibility of taking care of him.

I wish you the best and I hope we could work together in a future.