score:6
It's plenty of time. The airport is not large, and transit passengers do not need to clear immigration.
The airport seemed quite safe to me when I was there. It was fairly busy, so you will never be alone. I am not a woman, however, so my experience isn't 100% relevant.
Bring warm clothing. I was traveling in the summer, so I didn't have enough of that, and the elevation is quite high, so temperatures are low. The terminal is not heated, and it is open to the outside.