Hi guys, giving a quick update

. I'll be a bit more detailed this time.
I went to meet with HB and her friend yesterday purely for educational purposes and to see if I can learn anything from this situation. Here's what happened:
It started out neutral. I went on to set the frame, and maintained it. We talked for 2 hours before I had to leave for something else.
Throughout, she showed a lot of IOIs. I was particularly observant since that was what I went with the purpose of doing. Here's a few things I noticed:
- Dilated eyes
- Constant/excessive touching (I sat next to her where her friend was in front of us)
- Non-stop playing with hair
- Tries to compete for my attention when I was talking to her friend
- Lots of giggling
At one point, her friend wanted to get a coffee but HB decided to stay and we were left alone for a bit. We talked about a bunch of stuff. While she continued to show the IOIs above, I also noticed:
- Kept looking down and looking around when talking (???)
- Played with hair a lot more
- Kept correcting herself – “blah blah blah..... actually I have no idea what I’m talking about hehe”
- When there was even 1 second of silence, she picked up on conversation even though the topic was honestly kind of dumb
I asked her if she had a million dollars, what two cars would she buy and why. We talked about that for a while, and as soon as her friend returned, she directed the question to her.
^I'm confused about the whole section where we were alone, and what it all meant
Anyways, we finished up after 2 hours. She voluntarily told me her schedule, and I told her what I'm doing. She asked to hang out again next week. I say okay, hug, and I leave.
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My assumption is that she is attracted, but feels guilty?/nervous?, and I also haven't built enough comfort. Do you guys have the same read?
What do you think should be the next step (set up an actual D2? with her alone or in a group?)
Thanks!