A colleague usually has a normal relationship. When she got married, she didn't invite me to the wedding herself. She sent a short message without saying anything. What should I do?

If you don't want to attend the ceremony at all, and you don't want to gain or lose, the best way is to reply with a message of blessing, and then say sorry with the message that you can't attend. The reason is that you met a relative who got married on the wedding day, so you can't go to her.

The other party sends text messages in groups just because they don't want to gain or lose anyone. After all, some people are invited and some people are not invited. Isn't it obvious that they engage in circle activities? So you don't have to worry about whether the other party intends to invite anyone or what their mind is. As a married person yourself, you should know how busy you are during the wedding, and you won't have the mind to calculate others.