Bringing home the (healthy) kids from college - social distancing enough?

If there is already a post on this, I apologize. My daughter is (hopefully) returning home (to Central Oregon) on Saturday, from the East coast. She and some other college friends have been out hiking in the Smoky Mountains/surroundings. They drove from Hanover, NH to the outskirts of Boston, where they stayed with a student's family. As they were driving south toward Tennessee, each night they stayed with students' families. They have been as careful as they can, but obviously have been doing some food shopping and other transactions. They are hiking for another day or so, then driving back toward the Boston area, dropping off students on the way back.

My daughter will fly from Boston Logan (direct) to Portland, OR, where we will pick her up and drive her home. My husband and I are ages 58 and 63 and healthy. So, is social distancing enough, or should she/we take more prudent measures? She will want to visit with her high school friends, who are also all home early. Thinking about where the balance is of being prudent, careful, cautious.

Appreciate any thoughts and links to articles on this (including measures she can take at the airport and on the airplane)