Welcome to the forum! I live in Colorado too. Which city do you live in?
Regarding YBCR, you will be surprise how much they really know from the exposure, sometimes they just don't want to show off, but when you less expected they do. My dd is 21 months old and I'm surprise and how many words she can read, including words that we didn't repeat over and over. She liked YBCR when she was little, but around 9 months she didn't want to do anything with it. On the other hand with LR, she has been watching it since she was 6 months old, and loves it! We travel a lot, so we don't do the program every day, but again, I'm surprise on how much she knows. Just keep it up, I'm sure your dd one day will just surprise you too!