So I’m a man, looking for female advice. Help

My wife and I really want to make a baby, we already have 2 but they aren’t my bio kids. She was recently 9 days late on her period which has never happened to her before. For 7 of those days we thought she was pregnant and we were super excited. In the 9th day, she started. Now she is super let down and disappointed to the point where she doesn’t want to even track her ovulation anymore. Saying she is depressd. So here I am tracking her periods and ovulation making sure we have plenty of sex when she is ovulating. What can I do to help her, and is tracking her cycle okay to do?