She said "thank you! you too". Is it bad?

I'm crushing on my close friend for 2 months. My friends are pushing me to try and messing with my head now. I texted "Happy Valentine's Miss! I hope you have a great day!" She just said "thank you! you too". Is it a sign to stop trying? I'm not understanding her, if she knows or not
She said "thank you! you too". Is it bad?
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