Hi Jer!.
If she needs to go to Pamplona, she should take the bus (ContinentalAuto) at Avenida de America, shouldn't she?

When I take the bus to San Sebastian or to Pamplona I take it in Avenida de America, but now, I see that maybe in Mendez Alvaro there are buses of the same company to Pamplona too.
Ah!. I've just seen in their site that the Mendez Alvaro buses of ContinentalAuto go jus to Almu�ecar, Granada and Motril. So, you should take it at Avenida de America.
You'll find the schedule of all the buses at their homepage (you can find it at Jer's site).

There are 3 trips daily and 6 on Fridays and Sundays.
Well, Once you are in Pamplona you should go to Roncesvalles. The road is called N-135 (national 135) and There are about 47 kilometres between Pamplona and Roncesvalles. I don't know which bus company you must take. Maybe "La Roncalesa" but I'm not sure. I have found this 2 emails.
Tourist office of Roncesvalles: oit.roncesvalles@cfnavarra.es
Tourist office of Pamplona: oit.pamplona@cfnavarra.es
Write them and ask them for the bus from Pamplona (Iru�a) to Roncesvalles.
Suerte!