The mother of home alone party girl Gemma Johnson has told how she lies awake at night in disgust at the thought of teenagers romping in her marital bed.

Julia Anscomb said she felt violated after groups of youngsters enjoyed marathon sex sessions at the party which wrecked her £260,000 home.

She told The Argus she would like to sell her home in Alberta Road, Durrington, near Worthing - but doubts people would buy it.

Mrs Anscomb spoke after messages appeared on Gemma's website which bragged about the bash.

Gemma was allowed a sleepover with three friends when Mrs Anscomb and husband Robert went to London to watch a musical.

But revellers claim the bash turned into a "cross between a Hells Angels knees-up and a Roman orgy" with guests taking ecstasy, cocaine and marijuana.

Mrs Anscomb said: "I lie in bed at night thinking that people have been in here. It is just totally violating, horrifying and disgusting.

"I feel like moving on but I doubt I would be able to sell the house because of the reputation it has got.

"If you were offered this house and another of the same sort of value then you would go for the other."

Mrs Anscomb said she has not yet seen her daughter, who went into hiding after the party on February 22.

She said: "I have sent her a letter because she still doesn't believe she has done anything wrong.

"At the moment she's at her dad's house and is being monitored daily, going to school then going straight home.

"When the publicity dies down she will realises she's lost her mum and family home and everything that goes with it.

"I just don't know where I went wrong with her but she has obtained a couple of bad friends who she seems to idolise.

"She has certainly got to work extremely hard to rebuild her bridges but at the moment she has shown no remorse whatsoever."

A message on the social networking site Bebo attributed to Gemma says the party "went wrong but it was well good".

The message continues: "And my mother thought it would teach me a lesson by putting it in the paper.

"All that's done is make everyone go, 'wow, your party made the front page'."

Mr and Mrs Anscomb returned home to discover their drugged puppy Bailey comatose, £5,000 of damage to their newly decorated home and electrical goods worth £2,000 stolen.