Communication is key. I think most parental concerns can be mitigated with frequent check-ins. Tell your mom you will call her twice a day. Better yet, purchase a "Find Me Spot" (Costco and REI sell them, $150 plus a $99/year subscription at REI, or $150 for both the unit and one year at Costco). You can just push an "OK" button as often as you like and your parents can track your exact whereabouts and know that you're okay on the web. It's just the ticket for worrying parents and it works in places that cell phones don't.

http://www.findmespot.com/en/