New photographs of missing Hull University student Libby Squire have been released, as her parents described their daughter as a "much loved big sister".
The new family photos of the 21-year-old were released on Wednesday, 12 days after she disappeared on February 1.
It comes as fresh CCTV footage of the student, showing the last confirmed sighting from the night of her disappearance, was made public on Tuesday.
Pawel Relowicz, of Raglan Street, Hull had been arrested on suspicion of abduction in connection with Miss Squire's disappearance and police said he "remains under investigation".
The 24-year-old has since been remanded in custody after appearing in court on Monday charged with unrelated offences.
Officers say Miss Squire was dropped off in a taxi near her home on Wellesley Avenue at 11.29pm on Thursday January 31 and was seen 10 minutes later on CCTV near a bench on Beverley Road, where a motorist stopped to offer help.
Miss Squire's parents, Lisa and Russ, attended a special service on Wednesday organised in their home town of High Wycombe in Buckinghamshire as the search continues.
In a statement, her parents said: "Libby is a much loved big sister to her three younger siblings.
"They all really look up to her and she always expects them to behave.
"Libby has a big heart. She is always happy and having fun. She laughs a lot. She is a real family person, and loves spending time at home with them [her family]."
On Tuesday, Detective Superintendent Mathew Hutchinson said: "We are still treating Libby's disappearance as a missing person's enquiry.
"I have said previously that we are keeping an open mind as to her whereabouts and that is still very much the case.
"Our number one priority is to find Libby Squire and we are still conducting extensive searches and appealing for any information from the public."