I realize I'm not a professional-I was toying with the idea of improving to that point instead of working in my chosen field (which has everything to do with light, since my specialization is in microwaves/photonics) and had not made the decision to charge. This was a REQUEST/OFFER. She knows I'm a hobbyist, and haven't done anything professionally. I refereed her to some younger professionals in the area, and she said she'd prefer if I did it. I don't like the amount I would make would in any way change the lifestyle of the people around me-she already had a photographer help, and disliked the photos, and I don't think she would spend a 200$ sitting fee for someone better for a dog that she's trying to help find a home. That could easily go to vet fees for another dog. I really do think she wants to help me out, and just happens to also like what I've taken so far.
As for professionals charging-you had to start somewhere. Sure, it's a bit out of the ordinary to start so soon, but this is the opportunity I was given. I doubt you love every single photo you take, too, even if on average they are still much better. I'm currently job hunting and accepting anything that falls in my lap, so I will happily take on the extra pressure when she knows the situation fully and still wants to do this
Also, I think the advice I was looking for wasn't so much how to be professional, but how to organize a shoot in a way that makes more sense. This may very well come from experience and trial and error only, but that's why I asked-someone with more experience may be willing to offer a tip or two that would help me significantly. I think in general, professionalism is a learned quality. I know that I can take classes, but I don't have that ability at the moment due to travel and income. Her offer to pay me will go towards my future learning (or student loan) and help me continue to pursue this, rather than drop out thinking all my images are horrible. I may not love them, but if she does then it's worthwhile to help her out. I don't want to be changing lenses awkwardly, especially with the -30 degree weather and snow we've been getting. I don't plan on going somewhere unprepared, free or otherwise.
Forkie-I'm not sure why it won't let me quote you! Thank you for the kind words

I have a feeling this will be done outdoors, so background will likely be overexposed snow (black dog in foreground). I do have some that are similar I've liked of my own, but I don't love her expression in them. I should be able to replicate the effect, but I'm not really certain that's the ideal background either. I'm working with what I have; I can be resourceful. The point you bring up about overcharging is exactly why I wanted to ask-the shoots we did for charity were 15$ for one image, and the lowest paid professional in the area is a 200-300$ sitting fee. The professionals I would go to if I wanted images of my dog are closer to 500-1000$ for a package fee, with some prints included. I don't want to charge anywhere near that. Not even close. Not even a dream of being close. But I would like to do have more than one image at the end to give her, so I'm not sure what an appropriate middle ground is. I think the message earlier in the thread-to have it donated to the charity we volunteer for together, or to do dinner together, or something similar is what I will go with. That way, she gets to choose the amount based off what she can afford and what it's worth to her to support a friend.
Robbins.photo - I hope you don't lose sleep over this! I really can't emphasize more that this is a friend offering. I would never have asked for money or about the topic without her insistence. I've been very lucky and there's no need for you to stress-I won't be taking any money away from you or any professionals, and I certainly am not going to let this go to my head. It's a kinda gesture on her part and I in no way think I'd be ready to offer paid work yet.