What does it mean when she sends a purple heart emoji?

Stefan20
I've been talking with a girl through a dating app. First convo was cool. messages sent back and forth then i felt it was dying out then I sent her a last message with no open ends. A few days later, I noticed that she was celebrating a religious holiday and sent her a message. She sent one back saying "happy holiday" with a purple heart emoji. Does that mean anything? She could have used any other emoji for example the confetti emoji. Am I over thinking it? Or is there meaning in her choice of emoji?
What does it mean when she sends a purple heart emoji?
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