A BREAST cancer physician charged with spiking her lover’s coffee with a compound used in antifreeze was obsessed with the man and had a private investigator follow him, U.S. prosecutors said at her trial Monday.

    Dr. Ana Maria Gonzalez-Angulo, 43, is charged with aggravated assault of a family member, which also covers domestic violence in dating relationships, for allegedly spiking Dr. George Blumenschein’s coffee in January 2013.

    Gonzalez-Angulo and Blumenschein, both oncologists with the University of Texas MD Anderson Cancer Center, had been in an affair for two years when she asked him to try a coffee blend during a rendezvous at her home, a criminal complaint said.

    She is accused of spiking the coffee with ethylene glycol, which is commonly found in antifreeze and in science labs.

    Blumenschein told investigators that four hours after he drank two sweet-tasting cups of coffee he began to experience slurred speech, and a loss of balance and some motor skills.

    Blumenschein survived after undergoing dialysis treatments. A doctor called police after seeing a hazy quality in Blumenschein’s urine bag and upon examination, finding crystals consistent with ethylene glycol poisoning, prosecutors said.

    Gonzalez-Angulo would face five to 99 years in prison if convicted. (SD-Agencies)