That was my thought as well.
I wasn't a fan of the episode in general. But then I'm not a fan of Rebecca's story line. I don't think they're doing a good job of aging Mandy Moore, and when you couple that with the early onset dementia story line, I just have a hard time buying it.
I don't like Rebeccas story line either. It is so depressing. I do think they are doing a good job of it though if they are going to do a dementia story line. I also think Mandy's aging is awful. I wish they hired another actress to play "older Rebecca."