They thought she was making it all up. It cost a little boy his life. From cops and social workers to lawyers and judges, Long Island mom Justyna Zubko-Valva claims no one took her warnings about her NYPD cop husband, Michael Valva, seriously. Alleging sex abuse, starvation, brainwashing, beatings and possible child porn, the mom had insisted their three sons were suffering at Valva’s hands. But instead of getting help, Zubko-Valva became lost in a legal labyrinth where she was the one on trial, painted as a scorned woman with a “vendetta,” court papers show. One Suffolk County Family Court prosecutor...