Where Did Fiona Go on ‘Shameless’? Details on if She’ll Ever Return

But, by the middle of Season 9, Fiona realized she couldn’t afford her next real estate investment, and she ended up having to foreclose her apartment complex. She later learned that Ford was actually married, and he had been lying to her the whole time. While this was going on, she also had to move back to the Gallagher house, and she didn’t fit in quite like she used to. 

Fiona’s downward spiral was cemented when she began following in her father Frank’s footsteps by drinking all day and night.