She is considering getting it DNA tested but this is very expensive and someone else has told her that if the method of tanning can be identified it might help in telling the age of the blanket.
She has also had some feedback from people who have seen it who believe that it is a relic of the settlers/aboriginal days of around 1850. If there is anyone out there with an interest in such matters who think they might be able to help please email and I will pass on your messages.