Sienna Blake (
Anna Passey) spots Dilly taking the portrait of her and
Rafe Harcourt (
Chris Gordon)'s father out of Rafe's car and accused her of stealing from his car, injuring her in a struggle. Unimpressed by her brother's new lover, Dilly accused her of being a gold digger and rejected Sienna's attempts at friendship. In an attempt to get dirt on Sienna, she turned her attentions towards her supposedly-'ex' boyfriend
Ethan Williams (
Matthew James-Bailey). However, Dilly ended up befriending Ethan (who was initially sour towards her), especially after confiding in him - following an incident with
Donna-Marie Quinn (
Lucy-Jo Hudson) - that she was a recovering drug addict. Despite keeping her secret from Sienna, Sienna ended up finding out the truth and planted cocaine in Rafe's car in order to get Dilly sent back to rehab. Dilly returned, initially exhibiting some animosity towards Rafe and finding comfort in Ethan. Ethan and Dilly grew closer as Sienna and Ethan's secret relationship broke down, but Ethan repeatedly disappointed Dilly by refusing to progress further than a 'fling'. Combined with her struggles over Rafe's terminal illness, Dilly drunkenly invited Rafe's ex-girlfriend
Camilla Bassington-Hart (Dylan Morris) to the village. Sienna and Camilla both fought for Rafe, but Rafe proposed to Camilla at the Masquerade Ball, leaving Sienna humiliated. Rafe proposed to Sienna at the same time as Ethan and Sienna chose Rafe. Dilly and Rafe paid Camilla and sent her away: Camilla was, in fact, a hired actress and Dilly and Rafe were husband and wife with a revenge plot against Sienna. In the lead-up towards the wedding, Dilly drove the revenge campaign and attempted to sabotage Sienna's friendships with
Maxine Minniver (
Nikki Sanderson) and
Ste Hay (
Kieron Richardson), only briefly succeeding until the final weeks before the big day. On the day of the wedding, Rafe changes his mind and plans to cancel the event, so Dilly strikes him with a bell and hid him in the basement, telling Sienna that Rafe had run away. Upon returning to the basement, Dilly was distraught to discover that Rafe had died and moved his body to the sofa, tucking him in with a blanket. Sienna later found Dilly's locket necklace with a photo of Patrick Blake inside, but Dilly claimed it was a wedding present for Sienna. It was revealed that Dilly was in fact the half sister of Sienna, and was the late daughter of
Patrick Blake (
Jeremy Sheffield) after he abandoned her and her mother Margaret Williams after she found out about his double life. He chose Sienna and his family, leading to Dilly having an underlying hatred for Sienna for years. Dilly is pushed off a Balcony by Sienna whilst being confronted and
Liberty Savage (
Jessamy Stoddart) reveals to Sienna that she is her sister. She then tries to incite a relationship with much younger half-sister
Minnie Minniver (Ava Lorente) but Minnie calls the police under Maxine's orders, allowing Dilly to escape to the school. Sienna obtains a confession from
Warren Fox (
Jamie Lomas) that explains the truth about
Ste Hay (
Kieron Richardson)'s attack. Warren left Ste to die after pushing him off a building and is making Ste suffer in retaliation for Ste accidentally killing daughter
Ella Richardson (Erin Palmer). He forces Ste, along with
Murphy (Rick S. Carr), to threaten Sienna whilst she is having a girls night in with Dilly, Liberty and
Maxine Minniver (
Nikki Sanderson). Maxine shot Murphy after he attacks Dilly and he is later found by Dilly whilst she is on a run. Maxine calls an ambulance for him much to the annoyance of the group. She attends the wedding of
Dave Chen-Williams (
Dominic Power) and
Cindy Cunningham (
Stephanie Waring). She buys dodgy
ecstasy tablets for the wedding party. She later passes the drugs round to
Prince McQueen (
Malique Thompson-Dwyer),
Hunter McQueen (
Theo Graham),
Lizzie Chen-Williams (Lily Best) and
Zoe Anderson (Garcia Brown). They all consume the drug and are initially enjoying their time. Lizzie subsequently dropped to the floor whilst dancing with Dave, and the group watch as she died instantly. A panic-stricken Dilly, Prince, Hunter and Zoe then are overheard by Lizzie's adoptive brother
Mason Chen-Williams (Frank Kauer) discussing the events in disbelief. They later make a pact to "protect" themselves as they believe Lizzie would have wanted that – Hunter dies the same night. Zoe admitted to Hunter previously she did not take the pill. A grief-stricken Prince enforces Dilly to set up a meeting with the dealer who supplied the drug to her; she intervenes as Prince instantly attacks him. Prince and Dilly began an affair behind Zoe's back, much to the disapprovement of her family. When Sienna chastises Dilly about it, they argued and in the heat of the moment, Sienna admitted that she killed Ethan. A devastated Dilly started to pack her bags to start a new life with Prince, but Jez caught her and asked why she was leaving. She then told Jez that Sienna killed Ethan, however, his cold reaction and showing her Ethan's photo as well as his 'collection' in his book made her realise that he knew about it. Dilly, fearing for her life, tried to escape, but Jez locked her in the flat and strangled her with Martha's apron strings, killing her. The following day, Jez showed Sienna her dead body in a picnic basket, much to her horror, and asked her to help bury her. A horrified Sienna had no choice but to help him and they buried her in Jez's allotment. ==Reception==