this is such a shock as I am sure it is to you. I loved Tavia and I am so, so sorry for your loss. I don't know what else I am supposed to say. you will be in my thoughts and prayers through this most difficult time. she was a lovely girl and lucky to have you. accidents do happen and this is NOT your fault. take care and cherish the memories you two had together - it may not be easy right now but it will help you heal in time.
Rest in peace sweet beautiful Tavia.
here is a website that may help you heal with losing her.http://www.petloss.com/
again I am so sorry, sweetie.
I know you must be devastated. please take care!