I found Meeko the other day. I felt horrible. With tears in my eyes, I brought him to my home. Lucia ran up to me, asking if she could keep him. I said yes. He now wanders around my home. when I got home on time, Rayya has been saying "stupid dog" everytime she sees him. I took action. With the power of my thu'um, I blasted her off of the throat of the world. Now Lucia says "stupid dog", too. she is the only child saying it (alesan doesn't). What should I do? Is there anything I can do to fix it? I can't blast my child off of a mountain, so I don't know what to do.

most NPC say "stupid dog" from what I've heard. In Whiterun there are those two strays hanging out near Ysolda's house. Any time someone walks by I hear "stupid dog"

I think its just a program. However I did get Sofia to adopt a Dawnguard dog. No one tells it to shut up or call it stupid. I guess it depends on the dog.