(a) Where it is proven by a preponderance of the evidence that a defendant is liable for financial abuse, as defined in Section 15610.30, in addition to compensatory damages and all other remedies otherwise provided by law, the court shall award to the plaintiff reasonable attorney's fees and costs. The term "costs" includes, but is not limited to, reasonable fees for the services of a conservator, if any, devoted to the litigation of a claim brought under this article. (b) Where it is proven by
(a) A party shall file a cross-complaint against any of the parties who filed the complaint or cross-complaint against him or her before or at the same time as the answer to the complaint or cross-complaint. (b) Any other cross-complaint may be filed at any time before the court has set a date for trial. (c) A party shall obtain leave of court to file any cross-complaint except one filed within the time specified in subdivision (a) or (b). Leave may be granted in the interest of justice at any time