That means she hasn't done anything at the expense of all else. She was still much better at tactics and military thinking than the dudes who were given leadership positions above her. If her whole worth was in the terminator fighting prowess, she couldn't have second guessed the dudes above her or rearranged the orders so that she could still save a part of the day, nor read Ikta's message from afar. In other words, she's worth a whole bunch of soldiers all alone in sheer fighting plus using her brain like a tactician.
Fortunately Ikta still has a much more interesting personality. Yatori's character really wouldn't take her to anywhere special on her own.