How can I protect myself, my family and my assets in case of a divorce

I have been married to my wife for 6 months, and my wife is already beginning to put false allegation against my family and me that we have been unable to keep her happy. on multiple occassion, my wife cried and mentioned to me that she does not want to live with me, and she is already having thoughts for second marriage. Currently, the jewellery which we presented to her during marriage ceremony are in custody of my parents, but she and her family has been complaining and is eyeing on that jewellery. She has brought some jewellery from her home for herself, and recently, she went home taking all her jewellery without giving me prior information, after reaching home she told me that she has taken all her jewellery for ceremony, but 1 day later she mentioned to me that she has only taken earrings. I checked her locker and I can see that there is no jewellery of her. I think she will put a false allegation to police on my family about stealing and then extort the original jewellery which we gave to her. How can I protect myself. I have no evidence that she herself mentioned that she took all jewellery to her home.