Amber McCullough talks with a reporter from Colorado’s KUSA-TV on Tuesday, the day before she gave birth to conjoined twins at Children’s

A woman embroiled in a high-profile feud with Children’s Hospital Colorado over visitation rights of her infant daughter has alerted the medical center she plans to sue.

Amber McCullough’s attorney, James Avery, sent the Aurora hospital a notice of claim seeking $900,000 for mental anguish, pain and suffering, impairment and disfigurement.

McCullough, who is from Minnesota but came to Colorado for medical treatment, in August gave birth to conjoined twins at the hospital, one of whom died after a difficult five-hour separation procedure.

Savannah Rose McCullough, the child who survived, has been under intense medical supervision since birth and suffered serious complications, including a life-threatening internal hemorrhage.

Denver7 reported last week that McCullough said she was limited and then ultimately barred from seeing Savannah by hospital staff who allegedly complained that the mother was being disruptive.

Avery told The Denver Post on Tuesday that McCullough is now only allowed to see Savannah for a maximum of four hours each day, which he called “outrageous.”

The lawsuit notice, which claims the situation has taken a toll on Savannah’s health, was sent to Children’s Hospital of Colorado on Dec. 11.

The hospital has told Denver7 it does not comment when a patient or patient family members plan to sue.

McCullough is trying to transfer Savannah to Boston Children’s Hospital.

Jesse Paul: 303-954-1733, or @JesseAPaul