She needs to lower the price, despite what she thinks or an estate agent has told her it is not worth what she is asking for it.... how do I know because it hasn't sold in a year.
She needs to face the reality that she has to reduce the price. She can pretend all she likes that it's great with this and that and therefore worth what she is asking but clearly it's not.
Too many sellers out there are deluding themselves, price is everything, if it's not selling it's too high.