What is when a girl says my friend vs a friend?

When a girl says "my friend," it often indicates a closer relationship or a sense of ownership of the friendship. She may have a stronger emotional connection with this friend and considers them to be an important part of her life.

When a girl says "a friend," it suggests a more casual acquaintance or someone she does not have as close of a relationship with. It may also imply that the friend is not necessarily someone she spends a lot of time with or confides in regularly.