When a girl sends her picture to you without you asking for it, it could mean a variety of things, and the interpretation largely depends on the context and the relationship you have with her. Here are some possible reasons:
She's comfortable and trusts you: Sending pictures can be a sign that she feels at ease with you and trusts you enough to share a personal aspect of herself.
She's interested in you: In some cases, sending pictures could be a subtle way of expressing romantic or emotional interest. It might be her way of trying to catch your attention or show that she likes you.
She wants your opinion: If it's a photo of herself, she might be seeking validation or seeking your opinion on her appearance.
She's being friendly: In a platonic context, sharing pictures could be a way of enhancing communication and building a closer friendship.
She wants to share her life: Sometimes, people share pictures to give others a glimpse into their daily activities or experiences.
It's an accident: It's also possible that she sent the picture unintentionally, perhaps due to a misclick or a messaging error.
Regardless of the reason, it's essential to respond respectfully and considerately. If you're unsure about her intentions, it's better to ask her directly (in a polite and non-intrusive manner) rather than making assumptions. Communication and understanding are key in any relationship, so being open and honest with each other will help navigate the situation better.