As a person with a mother in her 80s, suffering from age related dementia, I can so relate. My guess is she is confused and picked it up herself, or told someone else to pick it up for her and forgot. Either that, or someone committed a felony. If she pursues this, the authorities will investigate. If the pharmacy released a controlled substance to the wrong person, they are going to be in serious trouble. If she threw out her old med bottle and a thief found it and knew it was around the time for a refill, he/she could have gotten lucky at the pharmacy. My guess is that she is just confused.

I've lived watching my mother go downhill in the memory dept for the last 5 years. It is not easy, believe me. She also makes up stories in her mind, some of them simply awful. She has accused my sister in law of stealing her shoes. The last big thing was the accusation that the volunteers who do the grocery shopping stole her eyeglasses. She accused my 85 year old father of having an affair with a 90 year old woman in their church, and the next door neighbor who is in her late 70s. One time she was hospitalized for something and while I was there, she leaned over and told me she had to tell me something. She whispered that my father had run off to France with his lover. My dad, is not only old, he's disabled. He has a hard time walking to the bathroom, let alone taking a lover to France. When I told her that wasn't true, I was just there visiting him before seeing her, she yelled at me, telling me she knows it true and I must be confused if I thought I had seen him that day. The absolute worse thing she has said was to call me into another room to tell me not to leave my then 6 year old son alone with grandpa, because he tried to molest my brother's daughter. Said that they were babysitting them last week and my dad followed my niece up to the bathroom and started touching her. She claims she started screaming for him to stop it, and he came downstairs. Well I told her that she was very confused and to be careful what she accuses people of. Also, reminded her that my niece is 17 years old, and they have not babysat for them in ten years. I told my brother who was devastated for my father that she was spreading this to all family members and friends. Said he hasn't left his kids there in 10 years, and dad can't walk up the stairs and has not been able to in 5 years.

It's so sad but it does not get better once it starts, believe me. Every week now, there is a new story. We never know if what she says is real or a delusion. My bet is that your grandma may have some memory problems. Hope it only stays contained to memory and not to making things up in her mind. You have to put this behind you. Forgive her and get on with life. Because nothing is going to change her mind about this. Someday she will forget about it anyway. And like I said, if she pursues it, the police will get involved and you will be cleared. Sorry you are going through this, but I know what you are going through.