Iskra isn't just impatient.
She lacks the ability to hesitate. Minor things that don't matter do not bother her what so ever? Someone walking slowly in front of her? She couldn’t care less, someone taking their time to fix a piece of her armor? She is fine.
It is when she is fighting or in battle or severely pissed off does she not give a damn. You can be monologuing your heart out about your elaborate plan and she doesn't wish to hear it, she will shoot you down without even blinking. Now you think what if you needed the information they had?! Oh no let me be clear she wasnt raised to rush in head first and be stupid or foolish, Isran taught her that if no one has any use to you and they are a bad person to be rid of them. He stressed this more towards daedra and vampires and kinds alike, but she has grown to believe these words.
It not what you can do for her, its more so important to prove your worth to the woman who wont take a a second to hear your sob story. She wounds, kills, maims, without a second thought.