well i think you should stay quite and let your husband deal with this issue the way he wants to. It’s his money and it’s his mom. I’m sure your husband will eventually say no to his mom or at least put a limit on how much he sends when he sees no savings after working so hard. And there are chances that the more you insist on not sending the money, your husband might probably go against you. Plus you might wanna think of making changes to your bank accounts, for example , put a limit or make a separate savings account for your and your husband’s future savings and you control it.