Most of Emmerdale's residents have selective amnesia when it comes to remembering who they are related to.
Neither Victoria nor Robert seem to remember Sarah is their niece, even when she was at death's door for months last year. Mind you her dad, who no longer needs to be on the run, doesn't seem to bothered either. Surely the SW could have someone like Diane mention Andy in passing ("Yes he emailed to say he is happily settled in New Zealand now so has decided not to come back...").
Kerry takes an interest in her invisible grandson Kyle every once in a while and then months go by with no mention of him.