Something to think about... a lot of actors in films who play a basic role- they do not star, nor are they an extra - usually get what is called "scale", which is a fee for a role. Depending on the size, time involved, etc. the fee may change some, but 'scale' is a basic starting point. For example:, ten years ago, Frank Silva played a character called "Bob" on the show Twin Peaks. While not a starring role, it was a pivital role. I read in an article that he was invited to come to a frat party, in character, then just hang out for the rest of the night. He contacted the fraternity and said that he would do it for 'scale' pay, and they went for it - Frank got paid to go to this party! While I don't know how 'scale' breaks down per day (some actors might have a 'day rate'; techs ALWAYS do), I recall reading that 'scale' was $10,000 ten years ago. Again, I don't know how that breaks down over time or duration of the role (10,000 for one role? 10,000 per week? Per month?) But it might be worth inquiring with some of the actresses's agents what their rate is for one 12 hour shoot.... $8,000 might be a huge amount of $ that many small time, out of work, or just-starting-out actresses would take easily. Or it might not be nearly enough.