They are both fairly rare, and or like you said wrong scale (for this data release at least). There is actually one in this field, but it is below the noise floor of this image, it is very small and very faint. There will be others in the future that will be easier to see. By the end of our survey we will have about 40,000 sq deg (a bit over half the night sky) looking like what you see here.

Be sure you and your daughter click the search icon, there are a few other fields of stuff you can check out. The links in the search will take you there without needing to scroll around the big black sphere.

I hope your daughter enjoys it, and we have a few activities at https://rubinobservatory.org/education/first-look-lasting-im... including a coloring book.