My girlfriend works at a US Embassy abroad, and I wanted to know since she works at a US embassy,?

All applicants are expected to meet the same visa issuance guidelines in order to receive a visa, whether they work at the embassy or not. The best your girlfriend can expect, based on her employment, is professional courtesy in the scheduling of her appointment, based on an official referral.

Getting a visa is all about ties to another country. I see that she's been to the USA twice already. That's in her favor. Getting the job in the embassy isn't based on her ties to the country, it's based on her ability to do the job. Apparently someone thinks she's good. Even though she has a good job at the embassy, she may have run into a consular officer on a bad day, the embassy's job may not be all that good compared to a job in America, or she mentioned having a boyfriend in the USA and is a single female. These would work against her. If she works at the embassy, she already knows what the visa requirements are. It'll be easier since she may dodge some of the scheduling hassles, but anyone who signs her visa application has to put his name on it indicating he is confident she'll come back. If it were I, my name wouldn't go on her application merely because she's an FSN. That helps, but it's not enough.