My agent, my agent!

I am not sure why I got an agent in the first place - as the process has gone I am finding I could have done this without her :( My husband is European and works in China, we were married in europe and have the marriage cert legalised by the chinese embassy there. I have ALL the documents I need for an S1 visa... everything and more. But my agent says I need a letter to say I am working. I said no, she said you will not get your S1 visa then. I explained, I have been married 3 years and I am a housewife, I havent worked since me and my husband got married and now I am currently pregnant. But she insists I have a letter than says I am working right now despite the fact I am clearly a housewife... is this agent trying to squeeze money out of me? I have said no... but I am worried now... please advise x would be grateful