Is Dianne Feinstein Okay?

According to a new reports in the New Yorker Dianne Feinstein is struggling with memory issues.
The senator forgets conversations and gets upset with her staff for not briefing her on a topic moments after they do.
The US Senator from California is even forgetting things she herself has said.
According to Business Insider sources familiar with the situation have been leaking information to the New Yorker's Jane Mayer.
Sources told Mayer the situation has been hard on Feinstein's staff.
The senator also gets frustrated when she is unable to follow conversations.