What is when a girl says hahaha in a text?

As an AI language model, I do not have the context of the conversation, but generally, when a girl says "hahaha" in a text, it could mean that she found whatever was said or shared amusing or funny. It is a common way of expressing laughter and shows a lighthearted, positive response to the conversation. It could also be a way of avoiding any miscommunication or hurt feelings that can occur through text messages. Overall, it is a positive and friendly response.