So my girlfriend had her taxes filed for 2 months now and we recently moved into a new apartment so we had to get our mail switched over which took about 2 months and she missed out on a letter from the IRS asking her to verify one of her returns. The thing is i know the deadline has passed but her
taxes have already been filed and accepted but now they want proof that she was the one who filed which she was but the only way they want proof of it is for her to mail it is there another way she can prove her taxes been filed?