It may have confused you that she dipped into an alleyway with her friends.
However, she may have done that because someone within the group suggested using that route.
In other words, it may have had nothing to do with you being around.
If you are having amazing conversations with her, but you tend to be the one who always initiates conversation, it may be because she wants to be pursued.
As of now, you have both been talking long enough to be quite familiar with each other.
You have even had a strong heart to heart conversation with her in which she opened up to you.
It is time to ask her out for real.
It is not enough to just make vague plans about meeting up.
Actually ask her out on an official date.
The sooner you do this, the sooner you will know whether she sees romantic potential in you or not.