I agree with UnluckyInLove. 6 minutes should be good enough, but you'll probably want to talk to her longer. Sometimes you hear her whisper as she repeats the question you asked.
I like her a lot, and she is honest. She'll even tell you bad news, but she's so kind and thoughtful when she does. When all other advisors told me that my SM and I were going to reconnect in July and have a wonderful summer together, she did not agree. She told me he would be self-absorbed all summer, and she was right! She's also been right for me regarding contact. She also told me that he would NOT respond to my letter and that I would approach him to discuss it within 1-3 weeks. She was right. He did not respond on his own, and I confronted him 2 1/2 weeks later.
I also like that she'll throw in random details just to solidify and confirm the connection... like how she told UnluckyInLove about the car. I never call about the father of my children, but last time I called her she brought him up on her own. She was really accurate when it came to him as well.
I don't want people to abuse her kindness, but I have to share this story. One day I left a feedback (still 5 stars) indicating that I was confused about a reading with her. (I'm noapologies929 on Keen, if you go through feedback). Anyways, I said that the reading had changed because during our first reading Sandy Esther said I would marry this man. A month later, she started detailing difficulties and told me that I'd have another option early next year. I left the feedback, and Sandy Esther IMMEDIATELY sent me a message clarifying her reading. She even sent me free minutes so we could discuss what she meant. She truly cares about her clients. She wasn't even back-peddling. She stuck firm to her new predictions, but assured me and explained why the reading had changed. She said it's MY CHOICE and that I will most likely get sick of his slow pace and how he treats me, but if I stick with it she still sees a happy ending. Most readers on Keen block people when this happens, instead she went above and beyond to explain things to me.