While Amy has never been explicitly shown to be *furious* when Elise kisses Sonic in Sonic the Hedgehog (2006), it's likely that she would feel a range of negative emotions, including:
* Jealousy: This is a natural reaction to seeing someone you have feelings for romantically involved with another person.
* Hurt: Seeing Sonic, whom she loves, kissing another girl would undoubtedly be painful for Amy.
* Disappointment: She likely feels disappointed that Sonic wouldn't choose her, despite her persistent affection.
* Frustration: Her long-standing unrequited love for Sonic might lead to frustration and anger.
Important Note: Amy is a complex character who is known to be passionate and determined. While she might not overtly express rage, her hurt and disappointment are likely to be significant.