Well, if they cleaned you're probably safe but I hope you washed your hands when you got home cause she must have contaminated the machines and the door handles. Noro usually remains "alive" on non-porous surfaces for 12 hours. Maybe you ought to buy the travel-size lysol sprays? That you can you spray the surfaces before you touch them (better to let it sit for 10 mins to disinfect, but better than nothing! And I guess she must have been cleaning because her family was sick (so.. contaminated clothes in the washer, hope she used hot water). Some people don't care about contaminating others.