I hope Bindi has had a chance to grieve. I'm not convinced this is healthy for her. At age 8, you're very easily influenced ... it troubled me that she is hardly out of the spot light since the death of her father. A typical child needs time, with family to adjust to this kind of loss ... the public is just looking to be entertained ... while they may miss her dad they don't' console her. I'm not convinced that using the public as consultation to adjust to the loss is healthy.
A child of 8, hardly has the wisdom to know what is best for her ... that's where I expect parents to step in and let her have as normal of a childhood as possible. It's the mentality of letting kids rule that troubles me as well as this particular situation ... . I wish her well ... .
Maybe this IS her way of grieving, honoring the Dad she loved. It may make her feel close to him by carrying on what he loved.