I am very sorry to hear of Nikita's passing. This a very emotional time for you and your family. Give yourself time to grieve. Don't worry about things like when you should go back to work etc, just try and get through each day.
You've got some good ideas from AJP and mj-mummy.
I wish you all the best with everything and I hope you have a beautiful funeral for your little girl. I'll be thinking of you.