I have let my DD go in the past.
Then, like OP, she was out of gym (mono, not an injury, but still out) for 4 weeks straight and was unbearable.
The next time she went to a skating party, I was on edge. Before having her out of gym for a solid month, I hadn't given it thought. After the experience, my awareness tripled. Mostly because I didn't want to have her out again.
That said, she had a stress fracture in her back last year from beam BWOs, then about to be cleared to tumble, and sprained her ankle in conditioning.
So, you just never know...