Your friend just had 5 kittens! She said "Ang pusa ko ay kakapanganak lang nang limang kuting," which means "My cat just gave birth to 5 kittens." To congratulate her, you could say something like: "Wow, congrats on the new kittens! I'm sure you must be so excited and happy. Five little ones is quite a big litter. Let me know when I can come by to see them and give them all cuddles. You're a great cat mom!"