Real estate agent etiquette question

[Christopher Meyer]

So I have completed one flip and did so without a realtor I purchased, marketed, and sold the house on my own. But after doing this I realized that using a realtor was going to be much easier. I went through 5 before I found the one I liked and she is successful and awesome. She has been sending me properties and showing my potential places for over a month teaching me soo much along the way. The problem is the other day I saw a FSBO close to home so I just stopped in. The place was a phenomenal deal and I made a cash offer and they accepted. I'm not sure how to tell my realtor and what I should say. I want to work with her for years to come and I also do t want all her hard work to go to waste. What do I do??!? Thank you