OKLAHOMA CITY - The family of murdered 29-year-old Tara Johnston and her 16-month-old daughter Allison want to know what went wrong.

Johnston and her daughter were found dead inside their Northeast Oklahoma City home Tuesday. Police suspect the woman's husband Daniel Johnston killed them. Police say he committed suicide inside a Las Vegas hotel room.

Tara's family said the couple appeared to be happy and in love. Tara's uncle, Bill Lisby, has no explanation for what happened inside the couple's home.

"There's no financial problems that we know of," he said. "No marriage problems. He took care of the baby as much as Tara did."

He said Tara was the type of person who was always smiling and happy, and no one would know if there was something wrong.

Tara and Daniel met at Earl's Rib Palace on North Western. The owner of the restaurant said he was close to Daniel and describes the 29 year old as a nice guy and calm. Johnston recently left the restaurant after earning an accounting degree.

According to Tara's Facebook page, on Valentine's Day she wrote "I have the best husband in the world." A far cry from the tragic crime police are now investigating. Her family hopes to know soon what went wrong.

"There must be something there that no one knew about and he was hiding it well if something was going on," said Lisby.

Tara's family is still dealing with the loss of her grandmother. The family plans to bury Tara and her daughter next to the grandmother in Harrah.

A fund has been set up at First Fidelity Bank in Edmond.