went on one date w girl i cold approached but she takes a long time to respond to me. should i

1) let her go 2) set up next date confidently as if all is going well (“when are you free next week?”) 3) be real with her (“listen, i think you’re cool but it seems like you’re not interested / aren’t responding quickly / so don’t wanna waste time for either of us bla bla”

thoughts?