Try to get a picture with better lighting you cant really see her, weight helps when figuring out the breed. You can figure out if she is a mature boy by flipping her over and seeing if there are any sacs, those would be testes and that would mean she is a mature buck of at least 3-4 months of age, if she doesn't have them it either means shes not a boy or she is a young male. This just helps rules out what sex she could be