Statute of Limitation in BC for Estate Litigation?

Does anyone know what the statute of limitation is for estate litigations? Or know of any sites which provide that information.

My mother passed away 6 years ago without a will. The family home was owned by both her and my father, both names appear on the title. She had no individual assets other then a savings account. Everything else included my father's name. One of my sibblings is threatening to go to court over my mother's estate after my father dies. They feels they are entitled to all assets. They are not my father's biological child nor did my father adopt them.