Re: Interview .......
Look, I have been in 2 situations where I have offered my hand for a handshake and the lady has looked at it and not offered her hand, its a momentary awkwardness for me, and I just move on, last time it happened it was a white midwesterner VP lady at a company townhall meeting. I did not take it personally and niether did she. In another case it was a Pakistani girl during college days, who said sorry I dont shake hands, andI was like oh I am sorry and we moved on. no biggie.
I broke protocol in that case, the general protocol is that a guy does not offer his hand for handshake, and only shakes hand if the lady offers it.
Aside from that, people are used to cultural stuff, often meeting with people from other cultures, Japanese for example who are not big on hand shaking.