But my opinion on the shot is if she made it 500 yrds the shot wasn't fatal.
I have at disagree with that Nubo. I believe virtuall every shot through the guts (sounds like it may be liver hit) is lethal. Problem is you have to wait and let them expire and from what you've told us I believe you got on the trail too early. When in doubt give them time to expire.
That's done now and the most important thing is to recover the animal. IMO you have no choice but to contact the property owner. Unless, (And I don't advocate breaking the law) you pick up the track of the animal without contacting the property owner. If you choose the later I don't recommend carring any sort of weapon except for a knife to dress the deer.
I fly straight when it comes to the law and I've been lucky enough to not have this situation arrise but IMO you must do everything to recover the animal. Keep in mind it is often easier to ask for forgivness then it is to ask permission.
*****Check the dnr website. most will have laws set for tresspassing and recovery of game. *****