Nope, doesn't sound like they got caught up in any new laws. Looks like they had a genuine interest in receiving the child porn.
"....The fact the most of the suspects are middle-aged women aged 40 to 60 has flummoxed investigators
. Even Interpol has turned its attention towards the case.
"Having women get arrested for child pornography is something unique. On the other hand, material sometimes appears featuring women who carry out sexual assaults on children. But we've previously assumed there was a man behind the assault...."
"Some of the women also have families, including children who live at home
more at link