Can my husband direct deposit our tax refund in an account I do not have access to?

We are separated. He prepared and e-filed our return, and had the refund direct deposited into an account he has with his mother. He keeps telling me he will mail my half, but I've been hearing that for two weeks now. Is there anything I can do? We are in Texas.
Update: I did not work, so I have no income and therefore cannot file my own return. He is in the US Army.
How do I go about suing him? Small claims court? My half of the refund is $1800.
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