It was the first time that I had really ever been around Barrie Callahan, so she strikes me -that memory strikes me because my mother had known her previously. And she was speaking about the textbook, just questioning them. I don't remember her exact words.
The authors mother is dead. 
( z1 die :ARG1 ( z2 person :ARG0-of ( z3 have-rel-role :ARG1 ( z4 person :ARG0-of ( z5 author ) ) :ARG2 ( z6 mother ) ) ) )