sting

Took home my first Nuke three weeks ago had been fine. I checked and found the outer frames had been drawn out and there was honey in some of them . Stopped feeding them and added a supper. all fine so far, The leather gloves I was using to open the hive got wet. I hung them on the washing line 30 yards from the hive. My wife went to hang her washing the next day and was stung by a bee who attacked her. Is there a link ?
I have turned the entrance 180 degrees so they will fly in the other direction.
should I need to move the washing line ?
Can anyone help on this as I would not want an other incident.