A bereaved mother wrote a poem in tribute to her daughter, days before she was herself found dead on the railway line where the teenager died.
The body of Joanne Coombs was found on the line on Tuesday
The body of Joanne Coombs was found on Tuesday on the line at Manningtree, Essex - her only child, Natasha, 17, was found dead there on 10 August.
Mrs Coombs posted the poem on a social networking website, on what would have been Natasha's 18th birthday.
Police are trying to establish how the 40-year-old from Dovercourt died.
A post-mortem examination showed Natasha died when she was hit by a train.
Natasha's body was discovered two weeks after she disappeared following a night out in Ipswich.
At a news conference on 2 August Mrs Coombs and her husband appealed for help in finding their daughter.
She broke down as the couple talked about Natasha's disappearance.
"The house is so empty without her. It's unbearable," said Mrs Coombs.
In the poem, left on the website initially set up to help find Natasha, Mrs Coombs said: "The house without you is empty and bare."
She ended the poem: "We know our hearts will never mend, we'll ache and weep until our lives end".
It was followed by a message: "I talk 2 u all the time baby and I know u r by my side giving me the strength to carry on.
"I love and miss u so very, very much."
Prayers have been said for Mrs Coombs' husband Gary at a church near the family home in Dovercourt.