These are not stupid questions.I've got another for you guys.
There's a woman I follow on Instagram, who I've never met in person, but lives about 20 minutes away, and posts a lot of videos and pictures from a park that we go to sometimes. If we go out there, and I see her, would it be inappropriate for me to go to her and say hi.
We've talked back on forth in the comments on her posts, so she is aware of me and knows I'm one of her followers on there.
Sorry if these are stupid questions, but I have social anxiety, and coming on here, and commenting back and forth with people on Instagram, are the closest I've come to socializing outside of family or work since I was in school. There are some days I don't interact with anyone in person besides my mom. And to be honest, the first time I commented on an Instagram post, I was terrified of kind of response it would get. Luckily, everyone who's responded to my comments has been really nice.

Given that she knows who you are and you've interacted online, I don't see anything inappropriate. If you say hi and she looks confused, say "we talked about X on Instagram" or something like that.
I'm not sure which part of AZ you're in (I'm in Phoenix), but I'd love to meet you IRL at some point. You're a hoopy frood.

Ah! Thanks! I first heard the term after my parents started going to an Evangelical church in the 90s.A prayer warrior, at least the actual usage of the term, associated with the act of being willing, to the point of discomfort, to call upon God (Jesus, Mary, etc) to intercede on someone else's behalf, and to remain praying until an action has been taken, has been around for at least several generations. I had partaken in a number of such things when I was a kid back in the 1980s.