I completely forgot to write about obaachan's garden!! I'm sorry(><;)
After watching and listening to the story about Linda Ohama and her grandmother, I was moved very much, so I'll explain it.
Firstly, i was surprised at her character as you said. she married her real lover and was blessed with two children in Japan, but she couldn't spend happy married life so long because of her mother-in-law, and she kept this big secret in her mind till she interviewed her granddaughter for the film, Obaachan's garden.Knowing the fact, I felt she was very strong woman. If I were her, I cannot help telling and consulting it, I think.
So when I watched the scene that obaachan met her daughter, chiekosan, i was moved very much. Although they live away from each other, I think there is a close bond of family between them.
