Hen off eggs for 1 hour - advice.

This afternoon I got my hen off the eggs she is sitting on so that she could eat, stretch and poo etc, but unbeknown to me the door to her coop closed behind her. She was off the eggs for about an hour (it's day 13 of sitting). Didn't get to feel eggs as she rushed in as soon as I opened the door. Will the eggs be ok? or if not what should I do? Let her go 21 days and then get day olds or is that not a viable option. 

Thanks for that poppies, I have been beside myself with worry over this  . I just don't know how I could have been so stupid as to not checking the door was secured open. So hopefully will have some hatching in 8 days. Will let you know