Her storylines have included dealing with the death of her mother, becoming the legal guardian of her siblings, her relationships with Declan Napier (James Sorensen) and Mark Brennan (Scott McGregor) and kissing a student.
[2] Executive producer Susan Bower said the introduction of the new Ramsay family members was based on the American drama series Party of Five.
[3] Brisbane actress Ashleigh Brewer arrived in Melbourne the week after graduating from her school to scout around casting agents and look for acting work.
After the death of their beloved mother, Jill Ramsay, she had to look after her younger siblings Harry and Sophie and quickly became the responsible adult in the family.
[8] Brewer told Jason Herbison of Inside Soap that following Jill's death Kate was "extremely distressed, upset and confused", making it hard for her to care for her younger siblings.
[10] The official Neighbours website describes Kate as "mature, independent and trustworthy", she is also a proud woman and very protective of her family.
[10] Following the death of Bridget Parker (Eloise Mignon), the bonds tightened between Kate, Declan Napier (James Sorensen) and Donna Freedman (Margot Robbie).
[7][13] Kate has been called too serious by her younger sister and has been advised to "stop carrying the weight of the world on her shoulders" and have some fun with her life.
[17] The storyline then carried on progressing and viewers saw the two characters grow closer until they started a relationship, despite the mixed response received from fans of Declan and Bridget.
[18] Declan goes to Ringo Brown's (Sam Clark) bucks night where he meets Kate's rival, Candace (Sheona Urquhart), who makes it clear that she is attracted to him.
[19] Jackie Brygel from TV Week revealed that Kate's new love interest would be Mark Brennan (Scott McGregor).
However, when he rescues her from lawyers Toadfish Rebecchi (Ryan Moloney) and Samantha Fitzgerald (Simone Buchanan), she changes her mind.
[34] Inside Soap said viewers would be surprised by the development and Brewer admitted to having some misgivings about the storyline, as she thought it was too soon for Kate to be pursuing someone else.
Brewer told Inside Soap that Kate goes into shock as she thought there was a small chance she could be with Mark if he came out of witness protection.
[40] Sophie then tells Priya Kapoor (Menik Gooneratne), the acting principal of Erinsborough High, that Noah was not lying and Kate's teaching career is placed in jeopardy.
[41] Following the Noah incident and the temporary loss of her job, Kate decides to "kick-start her life" and spend some time away from Erinsborough.
[43] Brewer commented "After the year she has just had with her boyfriend dying, and then kissing Noah and losing her career, she's fed up and not going to take it any more, so she sets about making some radical changes which will have a huge impact on the direction of her life.
[46] The actress stated "Having now been on Neighbours for over five years, I really feel like I've done my character justice and the time is right to close this chapter and open the next exciting one.
Stephen Montague (Damian Hill) and Mark's ex-girlfriend Sienna Matthews (Sarah Roberts) emerge as suspects.
They initially refuse to accept any help, but Susan Kennedy (Jackie Woodburne) eventually convinces Kate to move into Number 24 Ramsay Street, which is owned by the Salvation Army.
Kate finds employment at Harold's Store and enrols at Erinsborough High, where she befriends Donna Freedman, Declan Napier and Bridget Parker (Eloise Mignon).
Kate gets a paid dancing job with Terry Kearney's (Peter Moon) company and fellow dancer, Candace Carey, becomes jealous of her.
After Paul Robinson is pushed from the Lassiter's Hotel mezzanine, Kate gives his wife, Rebecca (Jane Hall), a false alibi.
When Noah explains to Priya the circumstances surrounding the kiss, she decides to handle the investigation internally, but Kate quits her job.
Dominic decides to accompany Kate to Vietnam, but Paul arrives to tell her that she needs to come home as Sophie is in danger of being taken into care.
Kate is delighted when Sophie and Zeke Kinski (Matthew Werkmeister) return to Erinsborough to help celebrate her birthday.
[53] A writer for Holy Soap said Kate's most memorable moment was "Coping with the shock of losing her mother and the responsibility of becoming her siblings' guardian".
"[55] A Daily Post reporter quipped "After her disastrous relationship with Declan, it's no wonder Kate's worried about her upcoming date with Brennan.
"[56] A writer for the Daily Record stated Kate has "always been Miss Steady" and someone people could rely on, so it came as a shock to see her fall apart and give in to Noah's advances.
[57] During the Noah storyline, Dianne Butler of the Herald Sun wondered if Kate was the "unstable one" as she appeared to tell a lot of lies.