Hi and Welcome to our family.
Please remember, that it can be quite stressful having a new baby in the house, it's all new territory, both for your bird and you especially. Lack of sleep, exhaustion from giving birth, and the worry of trying to settle into a routine with you, your baby, and bird. Please give yourself some slack, and take it day by day.
That being said, it is still early, and Reena doesn't understand what this "noisy thing" in her mind is, she is trying to figure things out, as well as you. Is there any possible way they can have separate rooms? At least for the short term until things calm down and everyone adjusts? That would be your best course of action until Reena understands and is comfortable with a change in her home life.
Don't give up just yet, it is still way too early to expect life to be calm. Have patience with Reena, she doesn't know what you know, or what is expected of her. B)
Please keep us posted. There will be good days, and bad. Just take it one day at a time and good luck! B)