Muffin was the same way Courtney. We bought everything & anything & she'd barely glance at them. Then one day I bought a small, furry animal (I think he was a raccoon, if memory serves me correctly!) with a squeaker in it & that was FINALLY what got her interested! She was just very...uh....selective about her toys I guess.
Ever since then, anything small, furry & squeaky is cool with her & nothing else. Don't worry about it. Just keep trying & you'll probably stumble upon something that Evie will love along the way!
CJ