Hello Gil and welcome to our family. When your grey lays eggs I would leave them for her to sit on, for one reason if you take them away she will only lay more to replace them and that could leave her with a calcium deficiency, it is better to allow her to sit on them until she shows less interest in them. You can also replace them with fake ones that will not be broken or cause a stink that real ones might, you can easily find them, just google fake grey eggs. Greys can be moody when nesting and sitting on eggs but she should return to normal when the hormones settle down.