Jocelyn Bennett and her daughters Rose (top) and Melody were injured in a medical emergency at Pleck house in Druids Heath
The devastated family of Jocelyn Bennett today switched off her twin girls' life support machines in a poignant farewell - as nursery rhymes played in the background.
The tragedy means Jocelyn, who remains in a coma, will never meet her tiny babies Melody and Rose.
They suffered multi-organ failure and lack of oxygen to their brain. Jocelyn was found unconscious after her heart stopped.
At 1pm today her partner Kevin Clarke, 31, along with the couple's close relatives, wept as medics turned off the life support machines at Birmingham Women’s Hospital.
A hospital chaplain performed a touching service and the babies were placed in their father's arms for a last cuddle.
Jocelyn's dad Joe Bennett, 54, said: "It was so hard and I could barely breath.
"They looked so perfect and when the ventilators were taken off their tiny bodies, I expected them to start moving.
"The vicar performed a lovely service and then the girls were held by Kevin for the last time.
"We left him with the twins so he could spend time with them on his own."
The girls were due to be bathed, dressed and taken to Jocelyn later today.
"Jocelyn is still in a coma but we wanted to be able to give her closure too.
"We have been through so many emotions.
"What helped us was the support that we had from people online.
"It was amazing."
Earlier Kevin, who also has a three-year-old son, Slater, with Jocelyn, wrote on his Facebook page: "Thank you everyone for all your support.
"Joyce is still in a coma and today the babies will have the life support switched off.
"Thanks again for all your prayers."
Both babies were christened after their birth last Wednesday.
Their family even held early Christmas celebrations for the tiny pair before their machines were switched off.
It could take Jocelyn up to eight weeks to come round, Joe added.
"We had to make a decision to switch off the life support machines and it wasn't easy. There was nothing that could be done for the girls. Now we have to concentrate on Jocelyn."
Pleck House in Druids Heath
Birmingham City Council is investigating why ambulance crews were not able to get inside Pleck House in Druids Heath early last Wednesday.
The authority said emergency access should always be available.
Jocelyn, who was 32 weeks pregnant, dialled 999 at 5.39am after suffering severe stomach pains.
But she was in too much pain to respond to a first response paramedic who arrived 12 minutes later and pressed the intercom.
Other flats also failed to respond to the buzzer.
Paramedics did not reach Jocelyn until police arrived to provide entry at 6.10am.
But she had suffered a placental abruption, in which the placenta partially or completely separates from the lining of the uterus.
Joe added: "The system at the tower block didn't work and something needs to be done about it before the same thing happens to another family.
"We have gone through hell and they can't mess about here. The council needs to wake up and do something about it."
Council leader Sir Albert Bore told today's full meeting of the authority: "My thoughts are with Jocelyn Bennett and her family.
"I can confirm a full investigation is now underway including all agencies which are involved."
A council spokeswoman said: "Our thoughts are with the family at this difficult time.
"We have systems to provide emergency access to our blocks for the emergency services and an urgent investigation was commissioned as soon as we were made aware of the matter.
"The ongoing investigation will involve all other agencies concerned."
Joe earlier told the Mail that he did not blame other Pleck House residents who failed to respond to the buzzer.
He said a previous police raid on the tower block had left many occupants reluctant to allow access.