I'm proud of you/congratulations!

After a long period of saving, my husband and I finalized the purchase of a home recently. I talked to my parents on skype soon after. My dad was really happy for me and asked a lot of questions. My mom sat there with an awful scowl on her face. 2018 was a tough year for her health-wise, but still, she could not even congratulations on this important step? It's sad, really.