She string jumped ya, She heard the bow shoot and was able to duck. Could be she was on high alert after your "mrrrrp" or your bow may off made more noise tha it should. See if there is something on your bow that needs quieting/tighting. A noisy arrow rest, a loose quiver or a loose screw anywhere will cause noise. I have dampners everwhere I ccan stick one on my already quiet Mathews. Limbsavers, doinker stabilizer, harmonic dqampers in my sight, all of these really help put the hush on my shots.

You should always stop them before shooting. A bow shot on a moving target is too risky. How did you determine the distance? by pacing it off or a rangefinder? If it's uphill or downhill it may be shorter than that. which would explain the high shot. Or maybe your pin was on the vitals but your shooting form was a bit off. At least it was a clean miss.

the longer the range the more of a chance the deer will react to the bow on the release i agree with the others try and quiten down your bow as much as possible i dont shoot with my quiver attached that eliminates one less thing that will vibrate yes i would stop a deer before i shot but remember the further the shot then theres more of a chance the deer will sqaut before the arrow gets there i try and aim just a bit low when the shot is 30 or more yards it works for me good luck and maybe you want miss again.

I read somewhere that deer can drop a full body width when spooked. Stay quiet, keep within your effective range, hold a bit low.

You should make sure bow is ULTRA-QUIET and try "lower" shot to compensate for the "jump", ya' might miss, but it will be a clean miss. If she does "jump" it might help you out.
As for the miss, it happens ! If taking animals was easy even PETA would want to do it !(lol).
Good Luck and Good Hunting !

Do some indoors shots at a range to see if you can hear what she heard. Try new string silencers. I use the tarantulas and they work great. Make sure when you test shoot you have on all your hunting gear, jacket gloves, quiver etc. Dress up just like you were in the woods. Could be your bow string hittin the cuff of your jacket! I know cause I have had that happen before. makes a loud pop! I wear a soft forearm guard now just to keep the jacket tight. Good luck

Great breakdown by Cgull, and BioGuy's got a good tip there. It's not a matter of accuracy: the longer the shot, the more time for the animal to move after the arrow leaves the string.
One of the reasons I have zero interest in archery, since a bullet will get there before the sound.

They will spook at a string twang but if she ducked the arrow she was probably looking at you after you made the sound. Deer are quick and can dodge an arrow they see from about 10 yards away. Wish they could play shortstop. I always avoid shooting at a deer if it is looking my way... you are just wasting a shot and often you will hit them in a non-vital area as they try to dodge the arrow. I don't mind shooting them on the move as long as they are just walking rather than uttering a sound they could home in on.