Not satisfied with the salon color foil I received, what should I do?

I went to a high end salon to get subtle blended natural looking highlights in my brown hair. I was just looking for a little dimension - as I have never colored my hair before. I really liked the stylist - she was great, friendly, funny and listened to what I wanted. Her color suggestions sounded good - I thought I'd like what the end result was. I spent $95 on the full foil and I tipped really well. I was told to go home and look in a mirror in the natural light to see the difference. I can barely see a difference. My family didn't notice that I did ANYTHING to my hair at all. I had to ask my sister if she could tell and she just looked at me funny. It doesn't look bad, it just doesn't look like I spent $100+ on my hair! I feel slightly slighted. I don't want to go back and ask for a redo but I don't want to go spend another $100 to get done what I should've gotten done in the first place. What should I do? I really loved the service I got - but the results are minimal to nothing. Any advice?