Ask her !!!!!!! ^^ You will know for sure... and please keep us posted ! =p (everything depends on the context, right? )

When we say that phrase to another person means that we want a more intimate relationship with her or him

I think she meant to say "don't keep YOUR distance"...in which case, she probably wants you to move closer to her. -I hope you didn't take time away from her to ask us. Get back to her. ;-)

Hi Wozitoya. We can only speculate here on the subject, for nobody among us knows about your relationship. However, it strikes me, that she felt a twinge of annoyance at having been made to wait for you.(You are getting recently to be a rare birdie here).In that commonsense aspect it is quite obvious why she said so. But maybe here's the feelings being rested on much more deeper basis.Why didn't you ask her directly what does she mean by saying so?;)

Was it her own paraphrase of "don't be a stranger"? That's how I interpret it.