Would you say "maybe next week" when you mean "no"?

Asked a girl out on a date and she said, "I'm busy this weekend, but maybe next weekend." I said OK, I'll call you next week.

My friends have said that what she really means is that she's actually not interested and to just move on and forget about her.

What do you think?
Would you say "maybe next week" when you mean "no"?
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