Very nice looking girls!

I'm going to make an educated guess and say they are Bci, probably Colombians.

To be a 100% on what spp. and locale you had, there are several factors. The subcaudal, dorsal and ventral scale count differ from spp. Then they count saddles, look at head shapes and coloration. It's a very tricky thing to get a 100% ID on an animal.

It's hard to tell if she will darken as much as the larger female, they age differently. Some stay nice and light, while most do tend to darken with age. That could be as dark as she gets though.