A better bet would be to go to a hair salon and ask someone there. Because even if you know the exact name/formula # (assuming that’s not her natural color) you won’t necessarily get the exact same color by using the exact same thing. Hair coloring can be tricky.

In addition to what @Darth_Algar said, different lines of hair color (different brands) have different names for the colors. Speak to colorist about how she or he would achieve the color you want.

^^^That. Plus your own hair color is going to effect the end result.

She’s definitely a level 6 or 7 (which is universal for hair color, any brand).. but as for actual tone I’m not quite sure. But yes, like Darth said, definitely get to a salon and they can have a color specialist help you pinpoint exactly what you need to get (granted also having to take your own color and what needs to be done to get you to that point into consideration.)

May I suggest that the OP move this to Social so that all of the comments will reappear?