Lexi Rubio.

Lexi Rubio

A grieving mother in Uvalde, Texas, is expressing her dissatisfaction over a call she says she got from the Uvalde school district, addressing an outfit her surviving daughter recently wore — five months after themass shooting at Robb Elementary Schoolin which the girl’s sisterLexi Rubio, 10, was killed.

“One thing we’re not going to do isdress code my 11-year-old for some ripped jeans,” Kimberly tweeted alongside a screenshot of the voicemail transcript.

She added, “UCISD (Uvalde Consolidated Independent School District), focus on school security. Maybe, if you had, my daughter, her little sister would still be alive.”

UCISD did not immediately respond to PEOPLE’s request for comment on Wednesday morning.

Alexandria “Lexi” Aniyah Rubio, the younger daughter of Kimberly and Uvalde County Sheriff’s Office deputy Felix Rubio was killed when a gunman opened fire on May 24 at Robb Elementary School. The shooting claimed the lives of19 children and two teachers.

With 376 total law enforcement on the scene, the shooter wasleft in a room with his victimsfor77 minutes before he was stopped.

Last month, UCISD announced thesuspension of their entire school police department. The administrational shift same after the district fired a newly hired officer who was revealed to be a former Texas Department of Public Safety trooper who iscurrently under investigationfor her response to the Robb Elementary School shooting.

Kimberly Rubio, Lexi Rubio, Felix Rubio.facebook

Alexandria Aniyah Rubio victim of the robbie elementary school shooting

UCISD will rely on the results of the imminent Texas Police Chiefs Association’s internal review in rebuilding the department and hiring a new chief of police. They will also look to JPPI’s pending investigation into the UCISD police officers' response to the shooting.

RELATED VIDEO: Uvalde Families Plead for Congress to Strengthen Gun Laws: “I Will Never Forget What I Saw That Day”

Lexi’s parents attended an honor roll ceremony with her on the day of the shooting, celebrating her academic achievements. About 30 minutes after they left the school, the gunman opened fire.

“Lexi was going to be somebody,” Felix told reporters shortly after her death. “She was going to do something.”

Never miss a story — sign up forPEOPLE’s free daily newsletterto stay up-to-date on the best of what PEOPLE has to offer, from juicy celebrity news to compelling human-interest stories.

“She was really smart, very driven,” Kimberly said. “She knew what she wanted, and when she wanted something, she went out and got it.”

A GoFundMe campaignhas been set up in Lexi’s honor.

source: people.com