What is the email Etiquette in this situation? I emailed my friend (she never really emails me).....but on this occasion she emailed me back. This time she asked how my mum was doing. Now(she didn't know this previously but my mum is quite ill). I emailed her back last week to let her know how my mum is doing and what she has gone through. She never emailed me back. Should she email me back as she asked me about my mum or does she not need to email now that she has the details?