My daughter just turned 3..

And she’s usually a really good girl but lately we’ve been having trouble with her being rude (mostly to my Grandma) and talking back to us. When I put her in time out she’ll scream things like “I will not let you put me in here again! I will break things! I will jump out of here and break this gate!!” (her time out area is behind a baby gate) Does this sound like normal 3 year old behavior or does it sound like anger issues? She’ll tell my Grandma to stop saying certain things and that she won’t talk to her and just rude things like that