I plan on letting my partner know to breathe and calm down.
That's nice that you want to help them learn some relaxation techniques.
I feel like I should talk to her about it first before I let you know what it is.
Telling your partner to calm down and help them relax is very good of you to do. It's nice when we can helps others when they're having difficulties.
She's being rude to me and ignore me. She doesn't need to breathe anymore.
It's good to help your partner relax but you should treat her with more patience and kindness. Just because you're upset with her doesn't mean she shouldn't breathe anymore. It's not right to hold ill will towards her.