Isn't that cheating?

My sister has a learning disability and she's in college. She's currently taking an Intro to Psychology course. I have 2 Bachelors degrees, one of them is in Psychology. She has a final exam in a couple of days, and because of Corona virus, the exam is online. The exam is open book, open note. She just asked me if I could help her with her exam. Isn't this cheating?

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