It is a psychological thing. Some people find it really hard to assert themselves when faced with dominant personalities. Differences in culture, gender, etc, c

It is a psychological thing. Some people find it really hard to assert themselves when faced with dominant personalities. Differences in culture, gender, etc, can be a factor. The article mentions that at the time her English skills were still developing, and that may have also played a role. That's not to say any of this entirely excuses what she did, but it helps put it in perspective. It was also the fault of other members of the jury, who were more concerned with obtaining superficial agreement than convinced agreement.