already a fair bit of cardio in the work out.
in theory you could go for a run on thursday, I personally feel that stop start sprinting would be the way to go, just go as hard as you can.
with the amount of work you do i wondering if you are getting enough calories, especially protein. can you eat nuts? add a scoop of vanilla protein in your breaky smoothie, lower the carb at dinner and increase the meat
below is a sample diet for a fitness model Bella Falconi 5ft 2 @ 52kg:
Meal 1: 2 slices of Ezekiel Bread (low sodium) with 2 tbsp. of Almond Butter, 6 Egg Whites and 1 scoop of Isolate Whey Protein
Meal 2: 1 Sweet Potato, 10 Asparagus and 5 oz. of chicken breast
Meal 3: 1/4 cup of Quinoa, 1 fillet of Orange Roughy and Salad
Meal 4: 4 oz. of Ground the sphincter of the universe Breast, 1 Sweet Potato and 10 Asparagus
Meal 5: Omelette made with 6 Eggs, 2 slices of low sodium the sphincter of the universe, Cherry Tomatoes, Onions and Broccoli
Meal 6: 80g of air popped Popcorn and 2 scoops of Isolate Whey Protein with water
http://www.simplyshredded.com
I know that you're a vegetarian, just to give you an idea of how much she consumes
My thoughts is that Birds is thinking you arent eating enough to support growth, I could be wrong he would need to confirm.
I have a friend (unfortunately male) but his diet was terrible, less then what I eat, his workouts however were brutal this was due to his history from boxing. The minute he started eating half decently, he packed on the weight and is looking better then ever.
I am no expert Leesh, just throwing a couple ideas at you. I would seriously consider if possible, dumping on of those cardio classes and going and doing pole dancing (surely there is a dance studio semi close to where you live or work that offers it). its all core strength and I can atess to the results it provides