Complex sentence: Betty Neutz Perkins was a painter in New Orleans, Louisiana, active as an artist primarily from the 1960s through the 1970s, whose works were signed with the pseudonym "Ruffindale".
Split into simpler sentences: Betty Neutz Perkins was a painter in New Orleans, Louisiana, who was artistically active artist primarily from the 1960s through the 1970s. Her works were signed with the pseudonym "Ruffindale".