Last hostage to face Lindt Cafe siege inquest

The last of the Lindt cafe hostages is set to give evidence at the Sydney siege inquest.

Louisa Hope is expected to face the inquest on Thursday, a day after hostage Selina Win Pe said she heard a sad last call for help from a male voice moments before gunman Man Haron Monis fired his shotgun.

What are believed to be manager Tori Johnson's final words have emerged at the inquest into the December 2014 ordeal, with Ms Win Pe saying she heard a male voice slowly say "Oh my God" moments before a shotgun blast.

"It was an absolutely fearful (plea)... A very dire, sad, frightened last call for help," she said on Wednesday.

Hostage Julie Taylor also gave evidence, the first time she has spoken about the ordeal, breaking down when asked to describe Mr Johnson.

"He showed amazing bravery and was very calm," she said.

Ms Taylor said she thought Mr Johnson could have easily escaped, given his knowledge of the building, and praised his enormous strength of character for staying.

The inquest also heard Ms Taylor, who was pregnant at the time, almost walked from the Sydney siege in its early moments but was stopped close to the exit along with friend Katrina Dawson.

Ms Taylor believed Monis then tried to position captives in windows to increase attention on his attack.

Ms Taylor, who was near a door, was too scared to leave because Monis had threatened to kill one hostage for every one which escaped.

"I couldn't live with someone being shot because of our escape," she said.

But when a group of hostages made a dash for safety in the early hours of December 16, Ms Taylor decided to run too.

Ms Dawson and the gunman died in the final moments of the siege as police stormed the cafe.

Hostage Ms Hope will give her testimony on Thursday and the inquest will continue for another five weeks.