She is correct. The total amount of time served on either RRORP or LPRP orders is 48 months.

They wrote it as "1 or 2 year extensions" to cover all the possible tour lengths that people took initially. Remember, those guys that took staff jobs in the CONUS only incurred 2 year tours up front, as did anyone coming overseas unaccompanied. Versus guys who did flying assignments who had 3 years after training, or overseas accompanied tours which were 3 years. It was just a catch-all phrase.

Also note that I said "on either RRORP or LPRP orders." Once an ARC member declares sanctuary, they are no longer considered to be in the LPRP program. They get new orders to AD, the rules change, and they are no longer limited by the 48-month maximum of the LPRP.