There are so many variables when calculating the day supply for medications, including eye and ear drops.
She did not get charged for a two month supply, she was charged for a 50 day supply which defaulted to her 60 day co-pay. If the drops have a refill they can be filled after 47 days.
I'm guessing if her story is true, her pharmacy figured 20 drops per ml, and she received a 2.5 ml bottle. Brand name ear and eye drops are pricey.
The folks at Rite-Aid are not greedy pigs, they are just doing as they are contracted to do with her insurance company that is going broke. Insurance companies come in and do audits. It's not fun having to write a check to the insurance company because you bent the rules for the patient.