You could respond playfully yet reassuringly to keep the conversation light-hearted while showing your determination. Here's a suggestion:
"Haha, I guess that means I'm just a little crazy about you! 😄 But rest assured, there's no way I'm giving up on winning your heart. You're too amazing to let go of! What can I do to prove I'm not mad, but madly interested in you? ❤️"
This response keeps the tone fun and flirty while conveying your commitment to her.