separated after 16 years, left with daughter and suitcase, has stolen everything, cut contact

[Realrose]

I separated from my partner of 16 years in December. I left with my daughter and a suitcase and flew to nsw from vic. I own a doll collection worth $30,000 that he has stolen. He has cut contact and has everything that we own. How do I get it back or even half of our assets