14-Month-Old Girl Dies After Dental Procedure

A 14-month-old baby girl died Tuesday after being put under anesthesia for a dental crown procedure on teeth that had cavities, according to her mother, Betty Squier.

Daisy Lynn Torres was taken to Austin Children's Dentistry in North Austin for the "routine" dental procedure, but halfway through the treatment, her mother was informed that a complication had occurred and an ambulance was on the way to take her daughter to the hospital.

Within a few hours, Daisy Lynn was pronounced dead – leaving her family in a state of shock and confusion.

A toxicology report determining the official cause of death will not be ready for weeks, PEOPLE has confirmed with the Travis County medical examiner's office.

Lara Anton, the Texas State Board of Dental Examiners spokeswoman, says they have opened an investigation into Daisy Lynn's death.

"We are feeling numb and lost and pained," the grieving mother, 26, tells PEOPLE. "We just want some answers. You trust your doctors, your dentists, thinking they know best."

She adds, "You don't take your child into the dentist thinking it will be the last time you see them alive."

Squier and her husband, Elizandro Torres, have been replaying Tuesday's tragic events over and over in their heads – wondering if there was some way they could have prevented Daisy Lynn's death. 

"I have so much anger," says Squier. "If only we had missed our appointment that day. If only we hadn't set our alarm clocks. If only we had gotten stuck in traffic… What if we had decided not to do the procedure, but you can't go back in time." 

Austin Children's Dentistry spokesperson Sarah Marshall says administering anesthesia in pediatric dentistry is "not uncommon." 

"Often with younger children, anesthesia is the safer route so they are not moving around. There is also less potential for a reaction to pain medication," Marshall tells PEOPLE. "We've never had anything happen like this. It's very tragic. Our thoughts are with the family right now."