Shlishi:
Or if she is holding onto it. For Karka (the family home), you would probably be correct.
For joint assets such as bank accounts, etc. just her threat to withhold permission to divide Al Pi Halacha (and go through secular court) might be enough, via the din of Ei Shaskis. I am not a Dayan, so someone who knows more about it could elucidate more.
One can usually find an opinion that agrees with what you want, if you look hard enough.