Agony after daughter, 13, given three tablets by dealer

happen to Grace, it can happen to anyone.’

Stewart told how the tragedy unfolded at a property on Arran Place on June 29.

He said: “She went to this house with a boy. She had met him about three weeks previously and was under his influence.

“For some reason the ecstasy has been offered to her and she was told by the boy she could take three of them. Grace was vulnerable. I just want to know the truth – I want to know what his motives were.”

He added: “The person who supplied these drugs should be punished and rehabilitated.

“But he will probably get six months in Polmont and build up his contacts in there.

“These ‘entrepreneurs’ have young people’s blood on their hands.”

Stewart said the process of confirming how the Irvine Royal Academy pupil died had been “painfully slow”, saying it took 10 weeks for toxicology results to be returned.

In a BBC interview, he said: “We have been in limbo.

“We did anticipate that it was drugs but about one per cent of us hoped it was natural causes.”

Stewart said he, his wife Lorraine and Grace’s siblings Dani and Matthew are still struggling to come to terms with her death but they want other families to be aware of the dangers.

He said: “She was amazing and loved by all her pals. About 300 people came to the beach for a balloon release in Grace’s memory.”

Stewart spoke after 18-yearold Thomas Lamont, from Glasgow, was locked up last week for a year for selling ecstasy to Zoe Bremner, 14.

Zoe died after taking two of pills in June last year.