Sounds like you've gotten some excellent responses, so not sure if this will be useful or not.
I'm not a pro, but it sounds like that quote was to cover the commercial license. Our wedding photographer is excellent and I may use shots on a blog, etc., as I choose. But when someone approached me to use some of the detail shots as background for a video, her first question was were they going to profit from the video. She would sell them a different license, basically, if so. She generally charges $100-$200/hr for photography + photo editing and then for portraits an individual digital image (non-commercial use) was something like $85 for 2-3 photos, I think? Even so, we spent $1k on photos for an entire wedding. (A huge value from her; her typical packages started at $2.5k, but we skipped the album and prints and just got digital images. And like Kell recommended, we knew she was out of price range but wanted to work with her, so we told her what our budget was and that we weren't looking for her to do us a favor, but what could she do for X amount? Hence, no albums or prints.) So, unless you're getting hundreds of images and requiring a half-day for the photo shoot, or her commercial licensing fees are high, $750 for a a couple of shots sounds high.
I'd keep looking around, but if you really want to use her, maybe you could clarify what the $750 covers; she might be including the hiring of hair and makeup artists. In which case, maybe this also covers $35-100 for hair (depending on what is done and where you live) and $60-100 for makeup?