Yukino is shown to be quite self-confident. She has immense faith in her abilities as a Mage, and takes pride in being a member of Sabertooth - even to the point of betting her life for it.
In this episode Jiemma, the Master of her guild is furious at Yukino's defeat and so he makes her come forward to accept her punishment for losing and staining the name of Sabertooth. He orders her to strip naked in front of her guild members and erase her guild mark from her body. Yukino bows to Jiemma, thanking him for her short time as part of Sabertooth. Jiemma simply demands that she get out of his sight.
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