I just found this post and from the minute that you said bumped head I knew it was a neurological symptom of LS. Anyways, I'm so glad that she came through surgery ok. I recently adopted a LS baby too. While doing some research I found this group which has taught me alot!! Check it out... you have to be a member, but it's easy to get in.
DogLiverDisease : Dog Liver Disease