Check fraud n forgery?

the county atorneys office sent me a letter that i had 2 checks that were used 4 buying chinese food,both in a 8 day period.it was my old account from a bank that has been closed for 2 years.they told me to go to the bank and file a afidavit of forgery and to bring it in.the bank says theres nothing on file about it but the attorneys office says i need one.now creates another problem my mother and i know it was my son and my mother wants to give me the money and just pay it so no one gets in trouble[son]now what i need to know is if i do that will i have that on my police record or maybe another one pops up will i be arrested.ty