harvinder
Now a days, EAD's and AP's processing is going very very fast. If you search this forum, you'll see people getting their renewals in just couple of days!!!!
My 4th EAD took 20 days, 4th AP 30 days. Your wife should receive her renewal pretty soon.
You have to keep in mind though that at USCIS no case is alike and unfortunaly there have been some cases of delayed renewals. Let's hope tha's not the case here.
Good Luck. Keep us posted.