Complex sentence: Min-joo is Seok-ho's loyal work-mate and friend who know Seok-ho for about 10 years and always help him, she is working in' Ocean Music' and she is trusted news source.
Split into simpler sentences: Min-joo is Seok-ho's loyal work-mate and friend for about 10 years so she always helps him. She is working in' Ocean Music' and she is a trusted news source.