What right does a woman acquire when getting married under the regime of separation of goods?

In practice whatever the regime under which you are married , what's hers is hers only and what's yours belong to the community[couple].Modern women are feminists concerning their money or property and traditionalists concerning man's money or property . In case of divorce your wife can get everything including your toothbrush and your underwear if she's really pissed off with you .

The 'separation of goods' regime exist to protect women [having money or property] against men who might try to play the 'female only' game of dispossess your partner .