Mistake made in Employment contract
One of our HR officers made a mistake when they renewed the contract for one of our employees. The person has been employed for 3 years and had certain benefits. In the new contract a mistake was made - the staff member is entitled to airfares back to her home base. Previously we had a clause saying that she is entitled to airfares back to her or her spouse's home base (within Australia). In the new contract the Hr officer deleted "within Australia" so obviously the staff member wants to travel internationally as her husband is originally from Vanuatu. We tried to rectify the mistake and explained to her what happened but she doesn't want to agree to a corrected contract and threatened legal action. I would like to specify that her role and responsibilities haven't changed from the beginning of her employment. What are my options now? Can anyone give me some advice? We are unable to offer her to travel internationally as that would create a precedent for other employees and also we do not have a budget for it.