I don't come here often to the RB, I just get too emotional, but I had to here.
Please do not beat yourself up over this, you did what you thought best, and that's all any of us can do.
I dont think any one of us here does not have a story where we should have, could have, maybe possibly have... and we cry, we second guess ourselves, we take the world onto us in these times.
Your little girl was absolutly loved by you, and that to me is a gift, the greatest gift any being can have, and have given. She had that from you, and she knew that.
Goodbye little one to the land where blowdriers freak out the other cats, you will be a Goddess!