That sounds so sad! Everyone's hearts are with you and Mark! It sounds like this was very rough...Keep yourself busy, and it won't seem as sad, but for now, I say grieve, that's the healthiest solution at this time. You're not alone.
Cloud and Sonny and Frosty(RIP)
Snow glistens upon the open field, I see your shape, I hear your chirp, and happiness fills my soul, knowing how happy you must be, to be away from me....RIP Frosty! I'll love you forever and for always!