My wife broke her collar bone just trying to learn how to roll in aikido.
I made it squarely past extra-beginner stage(5th kyu) with only a severly torn rotator cuff from suwari waza sutemi. Oh, the old days .The training we did back then. was, generally,harder then the training I'm seeing now. And the snow was deeper, especially without shoes.
It was around brown belt that the koshi's started flying. clavicle 1.
Then at shodan the hakama went on and a-blammo. clavical 2.
Hope your wife kept on with the keepin' on.