Yes, a girl can change her mind about you, just as anyone can change their mind about another person. Human emotions and feelings are complex and subject to change based on various factors and circumstances. People may initially feel one way about someone and later, due to new experiences, information, or personal growth, their feelings may evolve.
For example, a girl might have a different impression of you after getting to know you better, or she might reassess her feelings based on how you treat her and others, or even due to changes in her own life or priorities.
It's essential to remember that individuals are not static, and feelings can fluctuate over time. So, it's always a good idea to be respectful, understanding, and open to communication when dealing with relationships and emotions. If a girl changes her mind about you, it's important to handle it with maturity and respect her feelings and decisions.