That's Just Sneaky

I all of a sudden realized that before the neighbor's house went up, we had a preview showing of our house with a realtor. I thought she perhaps had a client in mind, but wanted to check it out herself. I didn't think much of it until the last couple of days. I realized she never returned with a client and initially thought that maybe it just wasn't the right house for her clients. Then it occurred to me today, it wasn't the right house for her clients because she is the realtor selling the house across the street from us, the one that is the exact same model as ours with the same number of bedrooms and bathrooms. We have kept all of the realtor cards from the showings and sure enough, her name matches the one in the yard across the street. Even if it is standard practice of realtors, (and I don't know whether it is or not), I feel like it was rude and sneaky of her to go through our home, then price their's. I'm not happy, again.