Eve Aston, 20, was found in her bedroom in Finchfield, Wolverhampton, by her dad Andrew, 43, last month, with the cause of her death not yet known.
Her mum, Amanda, said she struggled after the attack, which took place at an Ariana Grande concert on May 22, 2017, and killed 22 people.
She said the bombing “took its toll”, causing Eve suffer from PTSD.
Writing on a GoFundMe page to raise funds for her daughter’s funeral, Amanda, wrote: “From the moment she was born she was a jolly soul, she had a very funny sense of humour and was a daddy’s girl.
“She always had friends around her and was having sleepovers. She had lots of friends who she was always there for.
“She had really good banter with her brothers and sisters.”
Amanda said Eve went to the Ariana Grande concert with her dad and “was made up to be there”.
“Ariana was her idol. She could sing every note,” she added.
“They were on the other side, not where the bomb went off. Since then she has been back to Manchester and has loved putting flowers down for people.
“After the concert she started suffering from PTSD. She loved cars and was looking at getting a job working with cars but her depression got worse.
“She couldn’t sleep or hear bangs after the concert. She grieved for the 22.
“The last couple of weeks she seemed to be getting back to her old self, she had lost a lot of weight.
Amanda said her dad found her in her bedroom, and they’re still waiting to find out what happened.
“We’re heartbroken, it’s like a bad dream. It’s like she’s going to walk back through the door and say ‘got ya!’.”
The mum added: “She was such a beautiful person and she should be here.
“We want to give her a good send off, you shouldn’t have to bury your daughter.
“I wouldn’t wish this on my worst enemy.”
So far, more than £3,700 has been raised towards the target of £4,500 for Eve’s funeral.