I like a girl who usually sends messages, but she says; "Call if you have something, don't send a message." What does she mean?

First, she may like you. She wants to talk to you more, instead of texting all the time. Very tasteless. The real voice makes her feel real, kind and reliable;

Second, she may not be happy with you. She wants you to get to the point and stop texting. It's not like a man. Reject you in a word, so that you don't bother her anymore;

Third, she is in between. She wants you to change your communication style and stop being an underground worker. Understand?

I wish you happiness!