Her feedback comes from using it primarily for her interior design business in which she is already an expert.
She wants answers to her questions and seems satisfied with the quality of answers she receives. It was news to her that ChatGPT isn't always factual - but let's face it, neither are random web pages.
She wants an answer she can trust 90% and arguments that it's not 100% miss the tradeoff many people are likely willing to make by accepting some inaccuracy in exchange for time.
Check back in after some extensive use.
Have her interact with it in earnest about a subject she is an expert in.