Complex sentence: She studied at Ogaki Women's College and became a licensed dental hygienist, later working at a dental clinic, but she quit that job after a month because she didn't like wearing the uniform skirt.
Split into simpler sentences: She studied at Ogaki Women's College and became a licensed dental hygienist, later working at a dental clinic. But she quit that job after a month, because she didn't like wearing the uniform skirt.