Allie is Tricia Miller's former friend from when she was living on the streets prior to Tricia's incarceration. She is played by Rachel Brosnahan.
Allie appears in Tricia's flashbacks in "Bora Bora Bora". Allie and Tricia were both homeless and trying to get by. Tricia gave her some pointers when Allie was trying to beg for money, and the pair share some food that Tricia had managed to steal. Later, Allie found a job at a kitchen and turned her life around, getting an apartment with her boyfriend, whilst Tricia sank deeper into a chaotic lifestyle of drugs and prostitution. Despite going their separate ways, they were happy to see each other again after crossing paths on the street. Allie offered Tricia a place to stay, but after finding out Allie had a boyfriend, Tricia declined the offer. Is is hinted that she may have had feelings for Allie.