It sounds like your friend's cat has just given birth to five kittens. In the Tagalog language, "pusa" means "cat," "kakapanganak" means "has just given birth," and "limang kuting" means "five kittens." Congratulations to your friend on the new additions to her family! You could say, "Congratulations on your cat's five new kittens!" or "Congratulations on the arrival of the five adorable kittens!" if you want to send her a message in English.