No matter how long we have them its never long enough, But she is now sleeping in your heart and you will always have memories of her. You may never really get over loosing her but you will learn to live without her.
A year ago in May I lost my beloved bengal cat. He was 12, he was eating but loosing weight, I took him to the vet and was told he had a cancerous growth in his chest, he had regular vet care but this grew so fast we never saw it coming. I asked the vet how long he had and was told maybe a week but the lump was so big he would strangle, I didn't want that for him and hard as it was I had him put down right away. I held his little body in my arms and watched the life go out of him. I was devastated and inconsolable. But I didn't want him to suffer so I did what I had to do for him, my feelings were second. I have a siamese and another bengal and a german shepherd but no one will ever replace my lost bengal boy. I got the siamese for him as he was so bonded to me he'd pull his hair out if I left him alone, after running tests the vet determined it was stress and told me to get him a kitten so I got the siamese for him, We used to joke about how he'd left me for another woman. She was lost without him also, this cat never went outside but when he died she kept trying to get out to look for him. In her own way she missed him as much as I did. Then my daughter boughtt me another bengal kitten for Mother's day, he wasn't born yet but she had put a deposit on him and I had pick of the litter. He is a love, I love him as much as I did my other one but in a different way. No one will ever replace him, but I remind myself the new one isn't trying to be a replacement, he made a place of his own. Years ago my daughter had an oil painting done of him, for a time I turned the picture around as I couldn't bare to look at it, but now its back where it should be, I still miss him but I realize I did the right thing for him. It will take time but eventually you will be ready to open your heart and get another, not as a replacement but there are so many animals looking for homes and if she could talk your girl would tell you to love another. In the meantime take all the time you need to grieve, don't listen to people that say "its only an animal" what do they know? Unless someone has loved and lost a pet they have no clue. You and only you know how you feel. I wish peace for you, you made the right decision, maybe not for you but for her.
He is your friend, your partner, your defender, your dog. You are his life, his love, his leader. He will be yours, faithful and true, to the last beat of his heart. You owe it to him to be worthy of such devotion"