DEFOREST, Wis. (WMTV/Gray News) – A pharmacy student from Wisconsin was shot and killed by her friend Tuesday after the friend became paranoid from smoking marijuana, according to a criminal complaint.

Ariel Spillner, 26, was in her final year of pharmacy school at Concordia University and dreamed of moving to Florida after graduation to start her career.

“She was literally the best person you could ask for as a friend, as a sister, as a ‘TT’ [aunt], as a daughter,” her sister Courtney Spillner said. “She was the best to everyone. She would be there for anyone, no matter what you needed, when you needed it.”

The sisters spoke for the last time Tuesday night, about an hour and a half before the shooting.

“The last thing we said to each other was that we loved each other, so I am forever holding that memory close,” Courtney Spillner said.

Prosecutors say Jamica Mills, a 32-year-old Milwaukee woman, claims to have accidentally shot and killed Ariel Spillner, who was her friend.

According to the criminal complaint, Mills became paranoid that Ariel Spillner would stab her after the two had smoked marijuana together.

Mills told investigators she also accidentally shot herself in the stomach. She also said she didn’t mean to kill Ariel Spillner, according to the criminal complaint.

Courtney Spillner said her sister was celebrating her birthday when she was shot.

“I know she went over there to celebrate her birthday, so she said,” Courtney Spillner said. “I just can’t believe this happened.”

A GoFundMe has been set up to pay for funeral expenses. The family said any extra money will go toward a charity close to Ariel Spillner.

Mills is charged with first-degree reckless homicide. Her cash bond was set at $150,000. She is due back in court Nov. 17 for a preliminary hearing.