Just deposit it...what do you have to lose? No financial institution has the man power to verify every check written. Most banks dont even look at checks under 2,500. Even then, and then they just spot check. Unless we are talking thousands of dollars - I would just deposit it, and wait and see what happens. Whats the difference if you wait a few days waiting for it to clear, or have her send you a new one. In any case...dont sign it.