What does t2/flair hyperintense foci in bilateral external capsule, nonspecific mean for 34 year old female?

Nonspecific usually refers to non-diagnostic, and this will need clinical correlation. Although this could be due to blood flow irregularities, it could be secondary to smoking, migraine, or a host of other causes. Best you discuss this with the doctor who ordered the testing. In absence of clinical data, we are unable to provide more precise conclusions.