Rotti/Pit Mix with papers 4months in Hampstead, New Hampshire For Sale

I have a beautiful 4 month old rotti/pit female. We got her a few weeks ago, but with my 15 month old son its just to hard to give her the attention that she needs and she deserves the best. She hasn't been introduced to other dogs since there are no dogs in the family so im not sure how she is with other dogs.