B2 extension question! Many thanks!

My mom came in U.S. twice with the same visa. She stayed in China for three months and came back again. It was difficult for her to enter the second time but the customes officer eventually gave her 6 months. I noticed there is a handwriting something like 6508 or 6SO8. Can somebody help explain what it means?
Can I get her extended stay with this mark on I-94?
Many thanks!

所有跟帖： 

• You have to figure out what that was, if that was -usedtobeadoctor- ♀ (57 bytes) () 10/09/2009 postreply 08:29:37

• It is definitely not "no eos".What 6508 means? -Alii- ♀ (1 bytes) () 10/09/2009 postreply 08:47:06