I'm so so sorry for what you have been thru and what you are going thru now. I just can't imagine losing both my babies within days apart...Tears fall as I write this cause I do know and understand the pain you feel...and yes 15 years is a long time and a lot of love and memories that you have...I too just lost my 14 1/2 year old yorkie Bailey may she R.I.P on Oct 16, 2010...and our life as we had known it for almost 15 years change...my kids and Bailey grew up together like yours...I too didn't want to send my baby to rainbow bridge...but I went back to see her and the look in her eyes told me I had to do what was right for her...I sit my baby in my lap with my arms around her telling her how much I love her, it was very hard and I cried like a baby as she went to sleep and I helped her to rainbow bridge...I know in time you will do the same...Your babies know how much you love them and told you everyday with a tail wag...and they would want you to give that love to another very needy pet. Again I'm so so sorry