She insisted that Prime Minister Raja Pervez Ashraf's private visit to India last week to pray at a Sufi shrine "proved to be useful since it came in the wake of tense relations" between the two sides.
Khar argued that Pakistan was not so weak that it "could be browbeaten by the Americans so easily".
She said: "We aren't that weak. We know how to get things resolved on our terms. The Salala incident is a glaring example where we restored the facility for the Americans and its allies after obtaining an apology from Washington".
She was referring to Pakistan's decision to close Nato supply routes to Afghanistan after a cross-border US air strike killed 24 soldiers in the Salala region in November 2011.
The routes were reopened last year after the US apologised for the incident.
