Fiona Gallagher, a central character in Shameless , experiences a tumultuous journey throughout the series, culminating in her departure at the end of Season 9. Key events in Fiona's storyline:

• Fiona takes on the role of caretaker for her siblings, sacrificing much of her own life to support them after their parents' neglect.
• She faces numerous personal struggles, including legal troubles, a stint in jail, and battles with alcoholism, especially after a failed real estate investment.
• In Season 8, Fiona buys an apartment building and tries to establish financial independence, but a bad investment and a buyer backing out leave her broke, forcing her to foreclose and move back with her family. This leads to a downward spiral involving heavy drinking and losing her job.
• Her romantic relationship ends painfully when she discovers her boyfriend is secretly married with a child.
• By Season 9, Fiona realizes her siblings have grown up and can take care of themselves. After receiving $100,000 from selling her investment, she gives half to her family to support them and decides to leave Chicago to start a new life elsewhere, seeking to break free from the cycle of dysfunction and responsibility that has defined her

Fiona's fate after leaving:

• The show implies Fiona moves away, possibly to the East Coast or Key West, Florida, where she is sober and working as a bartender, but her life beyond leaving Chicago is left largely unexplored in the series

In summary, Fiona's character arc ends with her stepping away from the Gallagher family to pursue her own path, leaving behind a legacy of sacrifice but also hope for personal renewal.