<human>: I understand it's relatively subjective, but how long would you say a girl waits until her next relationship isn't considered a rebound?

I (22M) met this girl (23F) last week and we hung out and it seems pretty clear that we both show a mutual sense of interest in each other at the moment. She asked about past relationships (I haven't dated in quite a few years), and, when asked, she mentioned that she just got out of a relationship in May. 

When we parted, she sent me a text saying that she was hoping to just take things slow. That she's having fun getting to know me and would like it to continue. 

It would seem that, out of respect/dignity, she doesn't want to rush into anything and have me just be a rebound. And I'm grateful if this is the case.

Personally, I agree. I would rather take things slowly and get to know her, but I'm curious as to how long one would consider a rebound to extend.

Could you distill the essence of the text into 1-3 sentences?
<bot>: 22M meets 23F who just ended a relationship four months ago. How long does one wait to not be a rebound?