Complex sentence: She started to become known for her street art around 1999 and large-scale installations soon thereafter; in 2005, she was the subject of a solo exhibition mounted by now-mentor Jeffrey Deitch.
Split into simpler sentences: She started to become known for her street art around 1999 and large-scale installations soon thereafter. In 2005, she was the subject of a solo exhibition mounted by now-mentor Jeffrey Deitch.