Perhaps the call came from another universe, one in which the lady hadn’t died. There was some sort of weird timey-wimey storm and instead of calling the you that resides in that universe she called the you who lives here. Sadly, if this was the case, you may have lost your chance to speak with her since timey-wimey storms are so rare and unpredictable. 
Call her back and ask about Nelson Mandela and the ending to Big.
Also, ask to borrow a VHS copy of Sinbad’s Shazaam and see if she’s got any old Berenstein bear books.
Yes.
Oh… DAMN! You got me. Damn damn damn.