Hi! Congratulations...and thank you for helping this sweet little girl!
I personally do not like oatmeal shampoo for my Yorkies...I have read that is has a drying effect on them, also. You could give her coconut oil and put it on her skin and hair...rinse the excess off...organic virgin coconut oil not from COPRA, of course...mine love it as do I.
I make my own finishing spray...still experimenting, but I do put a little bit of coconut oil in the solution. I spray it on, gently massage it in, then rinse out, after which they get blow dried with their own doggie dryer.
There are a lot of great shampoos...I always make shampoo into a solution...it cleans better, it seems to me and no scrubbing...plus it is very cost effective. (Like that 'corporate' word...lol?) I keep intending to order Minksheen but it seems like everytime I have it in my cart, my browser crashes. The joys of internet computing, huh? lol
As to house training...consistency..schedule...you set it, she keeps to it...lol...hopefully. Plus, always tell her 'the word' for what she's doing at that moment (Helen Keller...remember? lol) and she'll learn an amazing vocabulary.
Good luck!