'She trusted my word and denied her a position': Researcher questions if she made the right choice in denying a 'strong applicant' a job

Guilt was eating this researcher up, so she turned to the internet for some help. 

These students are still quite young—they're both just 19 years old. They still have a lot of learning to do about how the world works and office politics. It's the kinds of things you learn over time, like knowing to schmooze with the right people when you have the opportunity, or knowing about the "praise publicly, criticize privately" rule. When you're young and first starting off, all you know is that you want to be great at your job and prove your worth. 

It seems like this woman is being so great that she's a bit off-putting. She seems talented but unaware that her bragging behavior makes the people around her feel bad. The original poster (OP) of this story worked with her in a research lab, and noted some irritating things this woman did. It'd be one thing if the OP was annoyed by her fellow researcher in a professional way. But other teammates also expressed how unhappy they were with this researcher, meaning that it wasn't just personal bias leading her to her conclusion. However, the OP now feels guilt over her decision, and decided to ask the internet what to do. 

Next up, these foods were so gross that people will never touch them again, like one person who was victim to a "donut that had been fried in oil used to fry fish."