If she has one or two puppies then they may be a bit later
Again varies from breed to breed that is why it is difficult to say. My breed has between 2-5 average most of mine have been 3 to 4 still always early. Think the only one who went to the 63 days was a litter of 3.
gundoggal , dont' think I am disagreeing with your advice at all, I am 1005 not it is just I am putting a different breed to it and I know your breed and mine will vary greatly on numbers, dates etc etc so it is worth mentioning. If it were my breed most breeders would be straight to the vet a day or two max after the due date of not sooner.
Same with ideal age large breeds and some smaller breeds do well with their first litter at 3 where my breed seems to do better at 2.