Quote Originally Posted by ewaldrep View Post
the estimate is just that, there can be a wide range of variability in sizes. I don't know the locality of the boa you have either and some boas are generally smaller as well. Do you have access to the previous owner to ask about the feeding schedule? Does she look like she is skinny? At this point, however, the most important thing is whether or not she is healthy and that you plan to care for her properly. Congrats!
This above is correct. You may in fact have an island locality or or some island locality mixed in. It's hard to say without knowing what your boa looks like. Post a picture or 2 and see if you can get some info on the snake. Are you certain it's a female? There are often mistakes made in sexing snakes.