First of all, I’m sorry for your loss.
Everybody expresses grief in different ways. Crying is not mandatory. Family always gossips, it’s their favourite thing to do. Some people even cry just for the sake of crying to seem “like they cared” and not be judged.
No one knows your pain better than you. People will always gossip and make rumours, you just hold your head up high and if they even have the face to say it to you, make sure to tell them as it is “you don’t have the right to speak about something which you have no knowledge about.”
You’re not a bad person for not crying. I’ve been to funerals, I’ve never cried. I hate how people think that a certain emotion determines your true feelings.