Help me stifle a neurotic mother (washer/dryer operation)?

Question:I own a GE Model WWSE5200B washer and a GE DWSR405EB0CC dryer. My mother is under the impression one can not (and obsessively insists I do not) leave the house, even briefly mind you, when either one of the units are in operation. Assuming I am operating properly installed units, in a recently built, properly wired house and have modicum of common sense (i.e.: follow the guidelines in the manual as to use), should I be concerned about leaving these appliances unattended. Am I right in concluding fire is a negligible threat hardly worthy of consideration? Does anyone have safety records with regard to these particular units or washers and dryers in general? Apparently my mother had some 'bad' experience with a smoldering dryer some 20 years ago, aren't modern appliances much safer. I'd like to be able to multi-task and not feel compelled to supervise these appliances when they are in use. Please help me shut her up before she drives me insane, a million thanks.

Answers:
your washer and dryer should be fine to leave if they are pretty new. It is something you can never be quite sure about just like you're never sure that you won't die driving your car today. We had a dishwasher catch on fire when we lived in an apartment (thankfully my husband was home) but we're not scared about leaving our dishwasher we have now running while we're gone. I think it's ok to be worried as she is just because you never know, but if you let it take over you'll never get anything done. I know from experience having to sit at home until all the laundry was done because the dryer would not shut off on it's own. Good luck!