Haley is gaining weight and feeling good! Her & Bucky are now best buddies. I haven't had very much time to ride her lately. She knows how to walk / trot / halt on the lunge line and is for the most part pretty calm about new things!
My best friend came to visit this weekend and we rode Bucky & Haley together. Poor Haley got stuck with the Western saddle and the snaffle bridle! I have been riding her exclusively in a bitless bridle, which she goes well in. She accepted the bit well, but I suspect she has not been ridden in one before. She is also VERY talented at getting her tongue over the bit.
So we included a bosal (as an energency brake / steering) in her tack. This was she could continue getting used to the snaffle and we could primarily use the bosal to stop / steer as this is more like what she is used to. 
Overall she did very well and was yielding her head to the side and halting with gentle bit pressure by the end of her second ride. She still needs lots of desensitization and hours under saddle to be a good trail horse! Her very sane & sensible temperment sure is helpful.
