After spending a stupid amount of time studying Holtz’s fashion, I’ve decided that she’s tailored her late father’s old wardrobe to fit her needs. Why let quality clothes go to waste when money could be spent on tools and equipment?

I’ve also decided that her father was also a scientist and that his untimely demise was due to his experiments.  Holtz inherited his love of engineering and tinkering with dangerous components, as well as his “creation is more important than safety” devil may care attitude.

Her interests in ghost came from the fact she’s convinced her father still haunts his old lab, which is how she met Abby – she read their book and thought that the tech was possible, but Abby and Erin just weren’t thinking radioactive enough.

Random thought: one of the reasons Erin was probably so against the news randomly naming them “Ghostbusters” (instead of the official name she gave the group) because it reminded her so much of when her peers called her “Ghost Girl” and laughed at her.

So she’s assuming “Ghostbusters” is a derogatory term that people will use to laugh at them, which in turn makes it a powerful moment after they capture their first ghost when she shouts, “We’re the Ghostbusters!” Because it’s like she’s telling all those cruel bullies that “I’m the Ghost Girl!” and it’s nothing to be ashamed of. In fact, it’s a title she now can wear with pride.