Bird question.... a little worried.?

I work at PetSmart, and today a lady came in a begged me to take her birds over night. they are Gouldian finch, anyway she said she would pick them up first thing in the morning... well its not that time yet but I'm worried about this situation... I'm worries their A. Stolen B. Sick Or C. she doesn't show up in 3 hours..... I'm stressing out about this. Is there anyway I can track the leg band that one of the two have? would you have done the same thing I did or am I just @#$%ed in the head?