Ask her in the email. You don’t even work in the office so it’s not like you have to go to her office. You don’t want to assume reasons for lack of reply and stressing about it. There might be an explanation. Other option is just let it go.

I honestly had no idea you are reserved! You are meeting and talking to all kind of strangers at concerts. You also share lots of very personal stuff with pretty random people! I thought you are not reserved at all. Reserved person wouldn’t ever do things you describe! Are you reserved only at work?