Originally Posted by 1flyer

I think the math I did suggests she gets not better than nothing but nothing. With LH or SAS, miles will likely expire before she reaches redemption levels.

Now, there are *A programs were miles don't expire for a long time. For instance, with Asiana, miles expire after 12 years. OTOH, low economy booking classes such as LH K and L earn zero miles on Asiana...