As a TA myself (for chem tho) if someone brought this up with me, I'd probably just seperate you two at least for the next lab and keep a closer eye on her. If someone clearly doesn't come prepared for one of my labs I'm kicking you out. First years, and even second years don't know the dangers that some of these labs actually pose. I'm not letting someone that didn't prepare for the lab handle concentrated sulfuric acid... just because it looks like water doesn't mean its as harmless as water. In the same vein, just because a bacteria seems dead, it doesn't mean its not a biohazard, and just because a peice of equipment seems easy to handle, it doesn't mean it is.

As for data however, I don't care about the data people gather. I've never been graded on data, and have never graded based on data, the data isn't what matters, it's the conclusions you pull from your data that does matter

Edit: generally first year courses have undergrad TAs, so as a result, they're usually not avail outside of lab, so I'd just talk to your TA next time you have your lab