It's understandable that receiving a selfie from someone you know can spark curiosity and excitement, particularly if you feel there might be a mutual interest. In this case, the fact that she shared the selfie with her friends could indicate that she feels comfortable with you and values your presence in her life. This could indeed be a positive sign of her interest.

However, it's essential to consider the context and the dynamics of your interactions. Here are several factors to keep in mind:

• Age Difference: The age gap of 8 years can significantly impact your relationship dynamic. At 25, she may be at a different stage in life compared to you at 17. It's crucial to assess whether both of you are looking for the same type of relationship and whether the age difference is a barrier for either of you.
• Intent Behind the Selfie: Think about the nature of your relationship and how you typically interact. Is this the first time she has reached out to you in this way? If she has a playful or flirty demeanor when you talk, it could mean she is interested in more than just friendship. However, if your conversations have been platonic, it might be more of a casual gesture.
• Social Media Norms: Sharing selfies on social media is common, especially among younger adults. It can sometimes be a way to seek validation or simply share moments with friends. Consider if she often shares selfies or if this was an unusual occurrence. If it's typical for her, it might not be as significant as you think.
• Communication Style: Pay attention to how she communicates with you beyond the selfie. Does she engage with you frequently? Does she initiate conversations? These could be indicators of her interest. For example, if she often texts you or responds quickly, it could suggest she enjoys talking to you.

Ultimately, while it’s easy to read into her actions, it’s essential to approach the situation with a balanced mindset. Here are a few suggestions on how to navigate this:

• Communicate Openly: If you feel comfortable, consider asking her about the selfie in a light-hearted way. This could help clarify her intentions without putting too much pressure on either of you.
• Gauge Her Interest: Look for other signs of interest. If she continues to reach out, ask questions about your life, or shares personal stories, these might indicate she values your connection.
• Be Mindful of Boundaries: Given the age gap, it's essential to be aware of the potential power dynamics in the relationship. Make sure that any interaction feels respectful and appropriate for both of you.
• Consider Your Own Feelings: Reflect on what you want out of this relationship. Are you interested in pursuing something more, or are you comfortable with just a friendship? Understanding your own feelings can guide how you proceed.

In conclusion, while the selfie could be a good sign, it's important to consider the broader context of your relationship. Take your time to understand her intentions and your feelings before making any assumptions. Communication is key, and being open about your thoughts can lead to a clearer understanding of each other’s perspectives.