Union pension paid by a southern state

I have come across a situation that I had not seen before.  I have a widows pension for Edward Cortes who fought in the 1st Regiment Texas Cavalry, Company G.  This unit fought for the Union.  The widow Roca Gentry applied for a pension with the state of Texas and received it in the 1920's. 

Was this common?  I had assumed that the former Confederate states paid Confederate pensions while Washington paid Union pensions.  Did other Confederate states pay pensions to units or soldiers who fought for the Union?

Thanks.