I agree, if he knows you don't like this work, he should get more work to help support your transition.
Or better still find someone better that does not rely on her having to sell herself to support him a grown man especially as he knows she hates it. I sometimes have really hated going out to jobs not knowing what i will put up with but if i was doing to support a man that would be awful i could never respect him ever but obviously we all live our lives differently and view things different. I hope she makes the right decision for herself.