What's the purpose of your herd??? If you're buying registered Hereford heifers to begin a seedstock program, I'd think there should be much better options. If you're planning to sell the calves at the local auction barn, then she could possibly be ok.
Her calving ease EPD almost max's the scale for Herefords to the negative side, so I'd be VERY sure to breed her to calving ease bulls only. Her heifers wouldn't do very well in the calving ease catagory as well. At best, breeding her to a calving ease bull might get her daughter's calving ease EPD back to something around average. That would work if that calving ease bull's WW and YW EPD's needed her help.
Now, if you plan to breed her to an Angus bull with good BW and CE EPD's to get a black baldie, she should be fine.
That's just by the "numbers." I think there's more to "this game" than just looking at the numbers. I wouldn't buy a registered heifer without being able to see the sire and dam myself. I've also seen pedigree EPD's be off considerably in both directions. Remember, non of us have even seen this heifer in question, much less her dam & sire. What does her dam look like? How heavy have her dam's calves been in the past? Does Voo Doo 17D have many calves on the ground, and how heavy have they been? Does your planned breeding bull have average or better M and M&G EPD's? Can he help her calving ease direct and calving ease maternal EPD's as well?
Personally, based upon what I know, I wouldn't buy her unless she was a real bargain.