On 14 January 2014, Mrs Scott tried to take her own life, resulting in “significant” bruising around her face, her children said.
Her family were not informed and were told she had a fall when they questioned staff about her injuries.
Ms Johnson said her mother confided she had been trying to take her own life but this was rejected by staff who said Mrs Scott was “attention seeking”.
They insisted she had a fall, but said they were increasing observations, the inquiry heard.
Two days later, Ms Johnson’s children found her setting up a ligature in her room in the same way she had reported.
Despite being placed on a higher level of observation and a search of her room, her daughter found items for a ligature in her wardrobe, which she said prompted more concerns from the family about the competency of staff.
In response to the attempt to take her life, Mrs Scott reported that the ward manager told her she had “overstepped boundaries” and “gone too far”, according to her family.
Ms Johnson said her mum had been “blackmailed” by staff who threatened to “reveal something about her” if she did not change her story about the events on 14 January.
“Mum said she felt pressure to change her story,” Ms Johnson said.
“She was frightened.”