Yes you can use it. Apply on neck, chest and the bottom of her feet and keep socks on. That soothes their symptoms by 60%. At least for my babies it did! Hope she feels better!

I did*

My son was sick at 1.5 months. U did the humidifier and saline drops. Just one spray in each nostril helped. I also got a Nose Frida to sick up the mucus since he couldn't breathe