If your scanner can save a RAW file do so. If the negative on the viewer's right (the child's left) has not blown out the white then you want to scan the negative darker than the one above. (You need data and blown out whites have no usable data.)
I recommend (if you have it) Adobe Camera Raw. (I know some people like to go into Lightroom but that tends to be faster but not necessarily better.)
Export as 16-bit Prophoto RGB into PS (if you have it)
Change the mode from RGB to LAB (This was in the Image menu, back in the day)
Place color samplers on both the shadows and the light on the white part of the dress (Is that called an "apron?") What you are wanting to determine is the overall deviation from the center point in the alpha and beta channels.
There also seems to be a different light source hitting the child's face. The skin color on the arm looks as if it was shot under the same color influence as the bottom part of the dress, but the face looks as if the color that is influencing it (which can either be caused by light reflecting off a colored object or by their being a colored light source is giving both the face and the hair a different cast.
So assignment one is neutralizing the color deviation. This is accomplished using curves in the alpha and beta channels.
It is to be hoped that this will diminish the blue tints in the shadows of the lower half of the photo and the yellowish tints both in the greenery and the face and hair.
After that will come the need to make the center of the alpha channel steeper especially on the magenta/red half of the alpha channel.
I wouldn't recommend trying to duplicate the red of the more recent picture that may be "a bridge too far". Simply trying to improve the current coloring of the older photo should be sufficient.