Why was she arrested? She didn’t signal for a lane change. She resisted because it was unreasonable.
You cannot resist arrest because it is unreasonable. And what makes you think it was unreasonable.
When you are stopped by the police, and you don’t agree with him/her ... do you resist? Do you shou=ut insults at theca? Do you fight with them if they cuff you?
If the answers are “yes”, you may end up in trouble the next time you are stopped.