Have been to Metro website and there are 3 possible routes - subway to bus. Any extra info that would be helpful for dtr who is going to hang out in DC for 2 days during Inauguration (no tickets) just to absorb atmosphere - with friend who is freshman at Georgetown.

Cab fare appears to be less than $20 - and I will pay for that for her - but might like a back-up plan. (She arrive Monday noon leaves 24 hours later - staying in dorm at Georgetown)

www.wmata.com has a trip planner. Also www.hopstop.com

Depending on the amount of luggage involved, it's a fairly close walk from the Rosslyn metro stop, on the blue or orange line. Just walk across the Key bridge from Virginia into Georgetown.

It's definitely walkable but it's there is a lot of traffic. Does she know where she's going when she gets to the Georgetown campus?

She could also take the Metro to Rosslyn and catch a cab from there. There are frequent cabs in the area or she could walk to one of the nearby hotels and get a cab there.

Take a cab. However, on Tuesday at noon, that will be the middle of the Inauguration festivities -- and word is that no cars will be allowed to run inside the Beltway. In that case, she should walk to the Rosslyn Metro.

If that means getting from G'town to DCA at noon on the 20th, the moment of the swearing-in, it could be difficult. Or it could be the few minutes of calm in the city that day.
My question is, why come at all if you must lesve at that time?

She is arriving Monday (Inaug. is Tuesday) and leaving Wednesday.

She could ride the Metro Connection bus from the Rosslyn Metro stop.

http://www.georgetowndc.com/getting-here/shuttle

Note that she needs to make sure she gets on a blue line Metro train at DCA to get to Rosslyn, not the Yellow line train.

Wednesday Jan 21 will be a busy day at the airports, but at least there will not be the massive road closures that are scheduled for the 20th. All the usual routes from Gtown to DCA should be available, but probably slower and more crowded than on a typical weekday.