If she starts and finishes and starts a lot of knitting projects, it might aggravate her tendonitis, and she might switch to spinning,
spin up some wool/mohair/alpaca top
after plying some romney roving. But two weeks of a mini spinathon might prove too much for her old wheel, and it might make little helicopter noises. Then the driveband might break.
If the driveband breaks, she will have to order a new one and wait.
If a knitter and spinner has tendonitis and her wheel has a broken driveband (and the is wheel now relegated back to the corner)
she might think of what else she could be doing.
If she is lucky, and the weather is nice out, and no other jobs lined up at the moment, she might dye up some new yarn.
The new Periwinkle Sheep Oh so fine! sock yarn. 100% superwash merino, 420 yards.
Deep Blue Sea (blue overdyed with more blue)
If the knitter/spinner/dyer dyes some yarn, and a local yarn shop owner asks her for a custom colorway
she is very lucky indeed.