The parents of missing Leah Croucher have said their family has been "destroyed" as they pleaded for information one year on from her disappearance.
Leah "effectively vanished into thin air" in Milton Keynes on 15 February while on her way to work.
An extensive investigation was launched following the last sighting of Leah, then aged 19, at around 8.15am on Buzzacott Lane, in the Furzton area.
Police have said they are unable to rule out that Leah came to harm and her parents Claire and John Croucher fear someone may have taken her.
In an anniversary appeal they questioned why she would "just disappear".
"Every day I feel like I've given up hope, and it's a big struggle to get that hope back," Mrs Croucher said.
"It's more and more difficult because, if someone took Leah for example, she's suffering for 365 days and no one wants that for their child."
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She told of her family's further heartbreak following the death of Leah's brother, who she says found the disappearance of his sister "very difficult".
Haydon Croucher, 24, died in hospital on 16 November – nine months after Leah went missing.
Mrs Croucher said: "They've destroyed our entire family and I don't think they will ever come forward with their information.
"As a family, we hold them responsible for Haydon's death as well. He obviously, as everybody knows, he couldn't cope, he found it very difficult.
"Why do they hate us so much that they've put us through this by keeping quiet? They should do the decent thing and come forward."
Mr Croucher added: "Two lives seem to have disappeared. My son has died, my daughter is still missing, we don't know if she's alive or dead.
"My family is destroyed. Stop being selfish, please tell the police what you know."
It comes as Thames Valley Police revealed that a reward for any iRead More – Source