a friend and her sibling were left their mothers house in spain over 3 years ago. she is keen to sell as she is a single parent and does not own a property here in the UK and wants to gather a deposit. she is worried that the sibling does not want to sell (sibling uses it for holidays - she is cannot afford the air fare...) - she wants to be diplomatic - what are her rights? what is the process if the siblings does no comply?