Complex sentence: In the early 1920s Tonita did not know how much her painting sold for at the Museum of New Mexico so she wrote letters to the administrators because a local farmer was worried that she got paid to little.
Split into simpler sentences: In the early 1920s Tonita did not know how much her painting sold for at the Museum of New Mexico. She wrote letters to the Administrators because a local farmer was worried that she got paid to little.