During this week, do a lot of just going around the rail of the pen and getting her softening to the bridle, cruising around at the trot and lope with no added pressure. Just get her comfortable. If she feels good, start asking her to bump up into the bridle. You probably aren't going to achieve a super good collected horse in just one week. The most important thing at this stage is relaxation, and then working on collecting her once she realizes what your hands and legs are cueing her for.
Pssh.I didn't pick up the wrong lead
It's called a counter canter...
...A very advanced maneuver.