Okay, so I put this ad up on a website to ride other peoples horse's on sundays. The whole point was to get more riding experience on a variety of horses. Fact is, I didn't ask my mom first, I thought she would go along with it . I own two horses (ages 3 & 23). Today, I got an email from a woman telling me that she would like it if I could ride her little fat fjord mare on the trails, and start her over fences. I went just now to go ask my mom if I could go ride her on sundays and she said no! She told me I have two of my own horses to ride. Thats true, but if I want to get better at riding I need to ride a variety of horses, not just two. How can i convince her that it's a GOOD thing to ride a variety of horses? Also, I offered to ride someone's horse, and they accepted and told me to call if I was interested. Now what am I supposed to do? Say "oh sorry I can't ride your horse"?I just put up the ad a few days ago! I'm totally stuck. I don't want to dissapoint this woman, but I want to convince my mom. help?