Chrissy was one of my favourite characters in Season 4. Absolutely sweet and had adorable chemistry with Eddie Munson (shipped them and wanted them to get together). Yes, she was playing a popular cheerleader and I initially wasn't sure if I'd like the character, but she turned out to just be an absolute sweetheart who was dealing with some horrible issues with her mom and her own traumas. I loved her and was dismayed when she died so soon - would have loved to see her for the whole season. I don't know how any Stranger Things fan could be upset with Chrissy and I've never seen anyone dislike her so I don't know if there is any truth at all in what that "fan" is saying. But all I can say is Chrissy and Grace's performances was one of the highlights of the season for me!
They have so much chemistry. The way they casually touch each other, tells you how comfortable they are with one another. Edit: I love the way she looks at him at 16:18