It can be anyone's guess. Unless you know the lineage, what the actual parents were, you can't be sure.
Just guessing I'd say possible IJ with Coastal or Jag, or Jungle Jag mix; or even high percentage Coastal. If a gun were put to my head, I'd go with the latter.
One piece of the puzzle may surface at adulthood. If Dolly is in the five-six foot range around 4-5 years of age then I would suspect at least one of the parents were IJ or a combo of High percentage IJ's.
To me, she looks like a nice Carpet. There is nothing wrong at all with plain o' Carpets or, mutts. Some members here have some beautiful mutts. They will probably stop by and post some photos.
Congrats on your beautiful Carpet.![]()