Police say an Indiana woman wanted on an arrest warrant plotted to kill her brother’s baby using poisonous breast milk.

Sarai Rodriguez-Miranda, of Fort Wayne, was charged Monday for attempted murder after her mother notified authorities of her plan, news station WANE reported.

Rodriguez-Miranda, who lived with her mom, reportedly was upset that her brother, his fiance and their baby girl were allowed to live in the home.

Court records said that the 19-year-old suspect shared a cellphone with her mother, which she used to text her boyfriend about a plot to murder the baby.

She allegedly told him that she was “so excited” about her scheme to crush Excedrin to put in the baby’s breast milk bottles, the Journal Gazette reported.

“I put the stuff in a made bottle in the fridge,” she wrote, according to court records. “Yeah I thought it was funny that I don’t have an ounce of guilt.”

Upon finding the messages, Rodriguez-Miranda’s mom went to examine the bottles and found the breast milk was an off color, authorities said,

The infant was immediately brought to the emergency room for examination, but didn’t show any signs of poisoning.

The family turned over the bottles to police. Toxicologists tested the breast milk and found it contained acetaminophen, caffeine and aspirin — substances in Excedrin.

According to the report, one bottle contained the equivalent of nine Excedrin tablets, which is enough to kill an adult.

Rodriguez-Miranda, meanwhile, reportedly sent messages about her plan not working.

“Why didn’t that baby die dude thats dumb,” she wrote, according to a report.

Police said that she fled town when she heard about the investigation. She and her boyfriend are believed to be in Michigan, court records said.