Girls, She gave me a firm handshake, what does that mean?

So there is a girl I like and I offered her a handshake and she gave me a firm handshake. I smiled afterwards and she wished me a great day. I didn't wanted to match the same grip cause I didn't wanted to be an asshole towards her. What does a firm handshake from a girl mean?

Girls, She gave me a firm handshake, what does that mean?
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