Married but separated and filed married joint

<p>I have a separation agreement that was stamped by a notary public. In the state of Louisiana you cannot file for legal separation and we absolutely cannot afford the legal process for a divorce at this time. We do not have a joint checking account but we did file a joint tax return. The financial office is asking why we still file a joint return, if we are separated. Not sure what to do. I cant afford the tuition and I cant afford a divorse. I am caught BW a rock and a hard place.</p>