A five- to seven-year prison sentence for a Lowell man who pleaded guilty this week to raping two 14-year-old girls has sparked renewed calls for sentencing reforms from a leading women’s rights advocate.

Attorney Wendy Murphy said the jail time for raping two girls in a case cops called “an unusually brutal assault” was insulting.

“It’s spitting in the face of those victims,” she said of the sentence, which includes three years of time served for rapist Andres Peguero, 21.

“It’s just not right. I’ve seen worse for abuse of an animal, car theft and larceny,” Murphy told the Herald last night. “Women and girls are not valued enough. Where is the outrage?

“If (Gov.) Charlie Baker or (Attorney General) Maura Healey spoke out about it, you’d see people marching in the streets,” she added. “Rape of a child should be up to life. … We’re not tough at all.”

Peguero, held without bail since the summer of 2015, when he turned himself in, had his charges reduced from aggravated rape of a child with force to rape of a child with force just before pleading guilty Thursday to four counts, according to The Sun of Lowell. Judge Robert Ullmann then sentenced him to five to seven years in prison, with credit for the years already served, the paper reported. He also admitted to supplying a minor with alcohol.

A spokeswoman for the Middlesex District Attorney’s Office declined to comment to the Herald yesterday.

Peguero and alleged accomplice Henry Espinola, 21, of Lowell were accused of plying two 14-year-old girls with booze and raping them in July 2015. Espinola is due to stand trial in September.

Police reported they found one of the girls lying on the street with no shoes, disheveled clothing and bruises on her neck after the attack. She was immediately taken to the hospital and the other victim was also soon found.

Murphy, a longtime advocate for sex assault victims, said the case smacks of the “discount sentence” given this week to the Esplanade rapist — who preyed on women at knifepoint for years in the riverside park and in other sections of Boston.

Alejandro Done was sentenced to 18-22 years behind bars for three rapes, crimes he committed between 2006 and 2010.

But prosecutors sought much more — 25-30 years starting after the seven to nine years remaining on the sentence Done is now serving for another rape in Cambridge when he was an Uber driver.

“It’s the government’s job to punish people in a way that reflects the seriousness of the crime,” said Murphy. “We need a new government. … The courts are sending the wrong message.

“Sex offenders talk to each other all the time about where to live, I’ve been told,” she added, “and Massachusetts comes up all the time. This has been going on for far, far too long.”