Final answer:
The speaker is showing frustration towards the mother's opinions on fashion and feels unsupported in their fashion choices.
Step-by-step explanation:
In the given dialogue about fashion, the speaker is expressing frustration with the mother's opinions. They are disagreeing with the mother's fashion advice and feeling that they are not being supported or understood. This sentiment is apparent in the defensive and discontent tone of the speaker when they feel their fashion sense is under criticism by the mother and when they feel that the mother prefers another's appearance over theirs.