Thank you all all for replies. Here are some answers to clarify to your questions:
We both need to sign off to draw from the account.
She is not missing in a sense of police type missing person. I just cannot locate her at all. I do not have her postal address either.
As far as redirecting of...
I am joint owner of the property in WA. The property is rented out and the rent is paid into joint bank account. The other joint owner is my ex-partner. We have been separated for 2 months. I cannot locate my partner in order to operate joint bank account or to direct tenants to pay the rent...