Your friend's message is in German. Here is the English translation: "OMG, did you see what Lisa shared on Instagram? Her cat had 3 kittens - the little ones look so cute. I want a cat too." From this, we can see that your friend's cat had 3 babies, which are called kittens. So the number of babies to congratulate her on would be 3 (kittens). To congratulate your friend, you could say something like: "Congratulations on the new arrival(s)! Three adorable kittens is such amazing news. So sweet that Lisa posted pictures on Instagram. Enjoy those sweet babies to your heart's content! ❤️" The number of kittens (3) is the key number in this message. Let me know if you need any other help with your German translation or congratulatory message!