Every person has a right to her choice - as long as it doesn't hinder or disrespect on anyone else. Is it because she is a Muslim or the fact she is a woman that you hold such views? Have a think events like this are sensationalized in the west to highlight and give ammunition to the "Anti Islamic Army". Tolerate others beliefs and religion and be respected yourselves.
Mate it realy simple if you don't like it don't have it. If someone is going overseas he should know what are the rules their. If the lady doesn't want to show her face she should refrain from visiting that place.