Telling Family

I have a sister in law that has been trying for 3-4 yrs and she has had two miscarriages. I plan on telling her this weekend. I’ll be 7w 3d when I tell her. I’m not planning on doing a grand gesture or doing anything special as a way of telling her but any advice is appreciated. I know she’ll be happy for us, I just wanna don’t wanna make her upset.