Based on your friend's message, it's clear that she has recently given birth to three boys, as mentioned in the statement, "Ihre Tatze hat 3 Junge bekommen." So, you can congratulate her on the happy news of her three new sons being born. Here's how you might phrase your congratulatory message: "Congratulations on the arrival of your three adorable boys! I'm thrilled to hear they're so precious and can't wait to see photos of them. While you're in this moment of joy, I also understand you're considering adding a furry companion to the family — what a wonderful idea to have a loving cat broaden the circle of joy in your home!"