Congratulations to your friend on her new arrivals! Based on the message you provided, your friend has given birth to five kittens (kuting is the Filipino word for kitten). So you can say something like: "Mabuhay ang inyong mga bagong kuting! Congratulations on the arrival of your five adorable little ones!" (Long live your new kittens! Congratulations on the arrival of your five adorable little ones!)