I don't think the Taliban give two craps about what the western civilization thinks of them.
The thing is, the northern areas of Pakistan are constantly bombed by US drone fighters, so the people there are rather sympathetic with the Taliban cause, but such an incident, like the shooting of an innocent girl from that particular area, is rather extreme, and turns those people against them as well, so the next time, they won't be so willing to conceal them or help them in any way.