Sas
you had a terrible tragedy happen, x2! you are not to blame! it could have happend to anyone. I used to let my Muffin outside, with me of course since it is dangerous here(coyotes) on a leash and only for a few minutes at daytime.
I feel so sad for you you, for your losses. but you can't blame yourself, who would have known that would happen?
but like you said it is done, what can you do now. just remember them with all the fond memories and know they are together at the RB.
cuddle with Miley, that might help some.