ARLINGTON, Texas -- Quinisha Johnson says she's is in a lot of pain both physically and emotionally, a day after her husband allegedly shot her in the leg and killed an armed Good Samaritan who tried to intervene in the domestic dispute.

She told us by phone on Tuesday the situation began because of a picture she had posted on Facebook the night before.

Johnson showed News 8 the picture. The selfie shows Johnson alone, leaning towards the camera. The picture is not so risqué that it needed cropping or editing to be appropriate for our website.

Quinisha Johnson says this picture that she posted to Facebook led to a deadly altercation between her husband and a Good Samaritan who tried to intervene in a domestic dispute.

Her husband, 22-year-old Ricci Bradden, didn’t like it. He thought it was drawing too much attention.

But Johnson told us that Bradden later called her and apologized for losing his temper over the picture. The conversation ended with Bradden telling Johnson he loved her and to have a good day, she said.

Johnson went to work Monday morning at a Walgreens on New York Avenue in Arlington and didn't see missed calls and a text from Bradden until she picked up her phone around 11:30 a.m.

She looked up and saw her husband, who is in the Army and stationed at Fort Hood, standing outside the Walgreens. She says she walked out and asked him why he was there and if the Army knew he left the base.

Quinisha Johnson

"He was just saying I was tripping, and I wanted attention from other people and attention from my husband just wasn’t enough," Johnson told us. "And I was trying to explain it to him, that I married you. You’re all the attention that I needed. And I could feel that he was getting mad, so I tried to walk off, and that’s when I heard him pull the gun out."

She says her husband of less than two months, who she met at Duncanville High School in 2009, shot at her feet and missed. Johnson says her leg was hit as she ran into the store.

Johnson told her coworkers to lock the doors as another shot rang out.

Newly-released 911 recordings from police reveal customers were hysterical when they called to report two shootings at the Walgreens.

"And you heard shots coming from inside the store?" you can hear a 911 dispatcher say.

"Yes, I was at the drive thru -- oh, my goodness, I think I still hear them," a caller said.

Anthony "T.J." Antell -- an Arlington crossfit gym owner, military veteran, and a father of three -- witnessed the dispute between Johnson and Bradden. He went to his car and retrieved a gun, confronted Bradden, and tried to make a citizen's arrest.

T.J. Antell and his wife (GoFundMe)

Inside, Johnson heard one more gunshot, followed by her high school sweetheart’s car speeding away.

Bradden allegedly shot Antell and fled the scene.

Antell died in the parking lot from multiple gunshot wounds, according to the Tarrant County Medical Examiner's Office. His wife witnessed his murder.

"He went into a protective mode," said Pastor Marc Lowrance, an Antell family spokesperson. "He's a father, protective by nature, and he thought he could help."

Gun safety experts and conceal handgun instructors say every situation is different when it comes to someone intervening.

"We do a ton of the, "What Ifs." What if I'm out and this happens, what if I'm out and this happens," says Cassie Shockey, an instructor at Shoot Smart in Fort Worth.

She says in general, if a gun owner ever feels hesitation or questions whether they can intervene successfully, it's best to avoid getting involved. That has always been her advice to the nearly 1,800 students she has helped during the past four years.

"It's difficult to make those snap decisions. It's literally a decision that could cost you your life, so it's something that needs to be made cautiously," says Shockey.

Johnson learned of the Good Samaritan's actions while she was in the hospital Monday. She said she is so sorry a stranger sacrificed his life trying to protect hers.

The scene after a deadly shooting killed a Good Samaritan outside an Arlington Walgreens.

She wants T.J. Antell’s family to know she is praying for them.

"I just want to tell the family, I am truly sorry and I will never forget this man," Johnson said. "I will never stop praying for his family and I just hope they could forgive me or forgive me for him being in this situation."

Johnson also sent us photos of her wrapped up leg on Tuesday. She's recovering from her injuries.

"I’m OK. I’m just in a lot of pain right now," she said. "I’m just glad that I’m still here and I still got another chance."

Ricci Bradden turned himself in in Hill County after he called his superiors at Fort Hood as he was driving down Interstate 35 and confessed to opening fire on his wife and then the man who tried to stop him.

Bradden faces a murder charge and an aggravated assault charge, as well as an emergency protective order to keep him away from his wife. He was transported to an Arlington jail Tuesday. He was then transferred to the Tarrant County Jail on Thursday.

His bond was listed at a total of $515,000.

Fort Hood officials confirm Bradden joined the Army in July 2015, and has been stationed at Fort Hood since January.

Johnson told us she knew Bradden has demons and would get angry if things didn't go his way, but she never thought it would come to this. Now, she says she'll be filing for divorce.

A GoFundMe page is now set up for Antell. Click here to contribute.