Esteri's mother is not so old, but she has an alzheimer's disease and she looks kinda creepy. Just because she doesn't remember how to take care of herself. Scary ill pike.
Also, sometimes she thinks that she never had a daughter, but sometimes she thinks that Esteri is dead and light candles near her photo. (But for real it is because of past trauma. Her little sister died and she thought that it is her fault)