Where a married woman becomes a purchaser of real estate, she may secure the purchase money, or part of it, by recognizance, bond, mortgage or otherwise as single women may, and her husband need not be a party nor consent to such act of giving security. In such case any such recognizance, bond, mortgage or other obligation or lien shall not be subject to any right or estate in curtesy of the husband of such married woman. In case of her entering into recognizance or giving bond or mortgage, or making other contract for the payment of the purchase money of such real estate, her husband shall not be liable, unless he is a party thereto.