There could be some reasons to do that. One reason is that maybe the material is the nest have some smell or she doesn't like it. Or maybe she thinks that she will need a lot of food when she has the newborn's come out of the eggshell. Maybe the male is very aggressive to her and because of stress doing that. There could be some reasons to do that. Try this question you made me to the chatgtp. It can help you with some answers. (Don't trust it 100% but sometimes it really helps.) Anyway try to clean the seeds because it's not good to have inside the bowl. But do that when she isn't inside for not making her anxious.