Go with a quality tripod with a ball head, aluminum if $ is an issue or an entry level carbon fiber. Carbon fiber is lighter, stronger and does not make quite as much noise, aluminum is less expensive and putting foam padding on either quiets them right down and makes them more comfortable to carry. A monopod is ok for quick jaunts away from a vehicle, but if she is somewhat serious a tripod is a must for a stable base for crisp sharp images in anything other than the best of light, and we know light in the woods at times animals are moving is not the best. The nice thing about the tripod is you can drop down only one leg for quick support, but you don't get extra stability out of a monopod if you need it.
The important thing is to make sure it's rated beyond the weight that will be put on it so it stays stable when fully extended. I've found a three leg tripod with quick release levers near the top of the legs, not twist locks is easier to use and adjust. Take a look at a good photography store for tripods, the stuff sold at Best Buy,Walmart and places like that are crap and don't hold up. Sites like
www.bhphoto.com and adorama.com have good selections and fair pricing. Manfrotto is a great brand with many options from affordable to rediculous expensive.
If you need more info PM me I can get more detailed as I spend more time in the woods with my cameras than (scouting) I do hunting, no bag limits, no seasons, and everyone likes getting their pictures taken (except for the fabled Washington grizzly bear).