Hey! Sounds like you have hit a plateau! This happens when your body gets too used to what you have been doing. Just switch up some things. Add a little more(and different) workouts. Eat something bad! hehe! You have come a long way! Congrats! I'm only 4'11 and my goal is 100-105 too! I know you can do it, I'm sure you already look great! You have done so wonderful..and remember the more muscle you have, the more fat you will burn. So weight training(like you started doing) is great.
Have an awesome day.