INTJ is one of the sixteen Myers-Briggs Type Indicator (MBTI) personality types. It stands for Introverted, Intuitive, Thinking, and Judging. While it is important to note that personality types do not define an individual completely, they can provide some insights into their preferences, tendencies, and behaviors.

Here is a detailed description of an INTJ girl:

1. Introverted: INTJ girls tend to be introverted, meaning they gain energy from spending time alone or in small groups rather than large social gatherings. They often prefer solitude and introspection, valuing their inner world and thoughts.

2. Intuitive: INTJ girls are intuitive, relying on their intuition and patterns to understand the world around them. They are future-oriented and enjoy exploring abstract concepts and ideas. They are often deep thinkers and enjoy intellectual pursuits.

3. Thinking: INTJ girls are logical and analytical in their decision-making process. They prioritize rationality and objectivity over emotions, often relying on facts and evidence to form their opinions. They are known for their critical thinking skills and ability to solve complex problems.

4. Judging: INTJ girls have a preference for structure and organization. They like to plan and make decisions in advance, often seeking closure and clarity. They are often goal-oriented and enjoy setting high standards for themselves and others.

5. Independent: INTJ girls value their independence and autonomy. They are self-reliant and prefer to work alone, often excelling in tasks that require individual effort. They are confident in their abilities and tend to trust their own judgment.

6. Strategic and visionary: INTJ girls have a natural inclination towards strategic thinking. They are often able to see the big picture and develop long-term plans. They enjoy analyzing problems and finding innovative solutions. They are often future-oriented and have a clear vision of what they want to achieve.

7. Reserved and private: INTJ girls can be reserved and private, often keeping their thoughts and emotions to themselves. They may find it challenging to express their feelings openly and prefer to maintain a certain level of emotional distance.

8. Perfectionistic: INTJ girls often have high standards for themselves and others. They strive for excellence and can be perfectionistic in their approach to tasks and projects. They are detail-oriented and value precision and accuracy.

It is important to remember that while these characteristics may be common among INTJ girls, individuals can vary greatly within a personality type. People are complex and influenced by various factors, including upbringing, experiences, and personal growth.