Ellie Walker focused on enhancing the parsing robustness of the HigherOrderCO/HVM3 repository by addressing a bug related to end-of-file comment handling. Using Haskell and leveraging her skills in compiler development and testing, she implemented a targeted fix to ensure comments on the last line of a file are correctly parsed and recognized at EOF. Ellie supplemented this change with a dedicated test, safeguarding against future regressions and improving the reliability of code analysis pipelines. Her work, though limited in scope to a single bug fix, demonstrated careful attention to parsing accuracy and contributed to the overall stability of the repository.