On that vehicle, it's a very bad situation because you need to get down about 2" to the point where the ball seat contacts the wheel. To attempt to drill this far without any guide would be futile.

You're stuck with attempting to drill a hole in the end of the remaining bolt and try to use an extractor. You might attempt to heat the bolt ..........in the hope that you can lengthen it a bit at the point where it contacts the wheel. However, the wheel is painted aluminum and heating that tiny area to make some difference is next to impossible due to the length of the bolt.

However, if some moron put the wheel on with an impact wrench with 150 lb.-ft..........you're in a world of hurt and you will likely lose the wheel in the process.

The point to note is to NEVER let anyone else install the wheels.