000646,
I think you have some really big misunderstandings about Torah law in regards to marriage.
Nowhere in Rambam or anywhere else does it say that a husband can deprive, starve, or hit his wife!
According to Torah law, a husband has numerous obligations to his wife, including providing food, clothing, shelter, etc. In many cases where the couple R”L separates, the husband continues to be obligated to provide these benefits until he gives a get and kesuba payment. This is somewhat similar to the concept of alimony, except that is is more extensive! In other words, Torah frequently provides greater protections for the wife in case of separation than U.S. law does!
There are other circumstances where a husband’s obligations to provide the funds for food, clothing, shelter, etc. are waived when they separate and before the get is given. Correspondingly in these cases, the husband’s rights to his wife’s earnings and estate also get waived. It is no different than separations in the U.S., where the estranged parties have to find their own way. The wife is free to move into her own home, get a job, etc. This is very different from the “starving” that you are thinking.