Seems to me after getting this I am not getting any type of set drops other than blackthorns.
I get legendary items from her.
I was getting set items and once I upgraded this nothing but blackthornes.
I have dropped about 20k+ blood shards to make sure before I came and posted this.
Edit: I have discovered that on my first character I made, Kadala works fine.
On any other character it is almost all blues and yellows.