They haven't given us any warnings about proximity. As Bobad said, beta particles only penetrate a couple of millimeters and they will be deep within her body. Also, this stuff has a half-life of only a couple of days and after two weeks there will be virtually no radiation left.
Thanks everybody for your good wishes and encouragement! We're only 24 hours away now (if they take her in on time). When we went up for the angiogram (her final test), they were over 2 hours late in taking her in for the procedure. Still, we were home by 4:00 in the afternoon. If they take her in on time, we'll be home by 2:30 or earlier. Amazing stuff!