<human>: I moved into my new apartment at the beginning of the summer. My new roommate is a tabletop gamer (as am I), and I was soon invited into his gaming group, which includes a nice young woman.

Within a few weeks I knew I was interested in her, and as time passes that remains true. I won't go into all the reasons why (it's irrelevant), but suffice it to say that she's a great girl.

The problem is that I have no idea if she returns my interest. I'm shy and have social anxiety (I identify with 90% of Socially Awkward Penguin). I've never known how to tell if a person is interested or not. I can't just ask, because the only time I see her is with the gaming group. We've never had a single one-on-one conversation.

I don't drive, and she depends on one of the others for rides to the house when they come over, so finding a way to hang out outside of the group would be difficult (but not impossible). I don't want to try asking her until I have some reason to think she would actually be interested.

She's generally nice to me. She doesn't seem to pay me much attention, but as I said above I'm socially awkward. Most people don't pay me much attention when in a group setting. She doesn't avoid interacting with me, and seems happy whenever we do interact.

But I really don't know how to tell if she's interested in me, or if she's just being friendly. What signs can I look for to determine this?

Could you distill the essence of the text into 1-3 sentences?
<bot>: I've been hanging out with a girl in a group setting for a few months, but I don't know how to tell if she's interested in me or just wants to be friends. How can I distinguish between these two possibilities?