The blind date girl sent me a message and didn't want to reply?

First, since you are blind date girls, it means that you have met, so you both have an impression of each other.

Second, since she sent you a message after you were impressed, it shows that she still has a good impression on you and wants to continue.

Third, since you don't want to return, it means that you are not interested in her, so as a boy, you should make it clear that you should tell girls not to pester girls like this by not returning messages. If you don't like it, you don't like it. This directly means that it is good for both of us.