Very scarey

. I hope she's OK.
I don't feed chicken thighs to my 2 adult Cockers for the same reason as Holly Berry. One of my two is a bone gulper given the chance, so if he has a chicken wing or neck I hold it while he eats to make sure he chews it enough. My other one is a more careful bone eater, taking his time and chewing, so I feel able to give him a bit more variety and he has rabbit quarters and chicken carcass as well as wings and necks.
It sounds like your puppy is a bone gulper, so if you decide to carry on feeding bones you could try either holding the bone while she eats or trying something bigger that's impossible for her to gulp down. If you do that please supervise her so you can see how she copes. Otherwise, there are plenty of minces with bone in that you could feed to ensure she has enough calcium in her diet and they, along with meaty chunks, green tripe, offal and oily fish, can provide the variety needed for a balanced diet.
Have you thought of joining any of the raw feeding Facebook groups? A few are very much for "extreme" feeders who feed things like pig's heads and other large bits of animals, but most have a mix of people who feed anything from minces upwards. I can recommend Raw Feeding UK and A.R.S.E (A Raw Start Explained in case you were wondering).