I bought a house in spain with my sister in law for 142, 000 in 2007. We still have a 94, 000 euro mortgage on it. The house is now worth 75, 000. She now wants to sell me her 50% of the house. What taxs fees would we have to pay. Also I was thinking of offering to take on her share of the mortgage for her half. Would thar be a reasonable offer?