Vera told police that she met the boy during summer school in 2015. She said she initially resisted the boy's advances until sometime last fall, when she agreed to hang out with her student.
Prosecutors say Vera and the teen had sex almost every day for nine months. She told investigators that they love each other, according to court documents. During the relationship, Vera told her neighbors that the boy was her brother, according to KHOU, a CBS affiliate.
Prosecutors say Vera groomed the child and his family, even moving the teen and his father into her home and pretending she was dating the father, the Houston Chronicle reported. She also bought groceries for the boy's family and paid the phone bills.
"She has a history of straight-out deception," Denise Nichols, a Harris County prosecutor, said in court.
Vera's 6-year-old daughter knew about the relationship, even called the 13-year-old "dad," Nichols said.
A mental health professional who works with sex offenders testified on Vera's behalf. Karen Lawson said Vera grew up around domestic violence. She described the former teacher as someone with a "big heart" and a need to be loved, the Houston Chronicle reported.
"I think she was driven by being in love with him," Lawson testified in court, according to the Houston Chronicle.
The investigation began after the school principal received a tip about Vera in early 2016. Vera told police she had gotten pregnant and had an abortion after Child Protective Services questioned her about the relationship in February, according to KTRK-TV, an ABC affiliate.
Vera probably will not spend her entire sentence in prison. She'll be eligible for parole in five years, the Dallas Morning News reported.