Thanks guys...
She is infuriatingly uncommunicative, so I plan to take it slowly. We've developed quite a bit of feelings for each other, so, first meeting, I want to make very few assumptions and stay away from being overbearing.
I was shocked to find having such conversations with my husband to be similarly frustrating (he's the damn extrovert and we've known each other for years!) Most frustrating was getting him to express his desires and limits - and he was very resistant to just going through a BDSM checklist. Boys.
I initially started with trying to exchange porn/literotica... but there is a difference between what you want from fantasy and reality... and it can result in some miscommunication.
Finally I sent him an email with three parts - first i listed out a few things, just a few, that I know I loved (kept it specific to sex with him in my case, I'm bi and poly he's neither so listing off fun things i've done in the past with other people would have been a conversation killer... you get the idea). then i listed off a few things i was curious about. finally i listed some of my hard limits - things i know i'll never be interested in and would never consent to (like scat or golden showers... children, animals, etc). Now the last part was particularly redundant because we already knew each other well and I already knew that my hard limits are a subset of his hard limits.... but it's still important to discuss.
He responded in kind and a conversation finally started. Just an idea. Figuring out how to effectively communicate with someone, particularly about things they might not have 100% figured out yet, can be difficult. Remind her that "i don't know" is a valid answer.
So maybe it's too soon in your conversation to go way off the kinky deep end with this girl... but you could apply the same idea to what she's suggested. What do you know you want out of the encounter (not what you think SHE wants, what do YOU want)? What are you curious about (maybe hair pulling or actual throwing around)? What don't you want to do (choking)?
You need to ask yourself what your limits and desires are, too. I guess an important question to ask yourselves is what is your real experience? Has she played around like this before and her request is based on this?
I was shocked recently to discover that several of my male peers (late 20s early 30s, many married) had never received a blow job ?! Definitely not something I would normally think to ask about... but you just can't assume anything.
Sounds like you're off to a good start. Best of luck!