Meryl Streep has been accused of making the Margaret Thatcher biopic “The Iron Lady” just “to make some money.” But the Oscar winner cut her fee on the film to $1 million and donated the proceeds to charity. A former Thatcher aide bashed the project this week, saying, “Its only value is to make some money for [Streep].” But the actress slashed her quote to get the movie made, sources say, and she pledged a million to help fund the National Women’s History Museum last fall, according to reports. Word leaked that Streep would attend a semi-spontaneous New York screening of “Lady” this week. But that was never possible: She was traveling between Washington, DC, and the US-China Forum on the Arts and Culture in Beijing with Amy Tan and Joel Coen. Reports say she’ll show the movie there.