DD reaches base around 20% of the time due to defensive miscues. They prepare so much for her speed that they rush the play and usually make a mistake trying too hard.
I would assume that some of that 20 percent should be ruled a hit. If a shortstop knocks down a difficult grounder but still would've thrown out 90 percent of runners, but not your speedy DD, then that's a base hit. I'd think that if anyone is getting ROE 20 percent of the time, that has to be a low level of play.