I’m also 5’7, so I feel your pain!
writersoul-I don’t know if they have Ross where you are, but b”H I’ve had some success finding pencil skirts that are long enough and not tight. ( Emphasis on some-I guess there’s a reason that I’ve found two in the past two years 😀 )Occasionally Old Navy has, as does Carson’s (it has a different name in different states, but I don’t remember what, sorry!),though usually you have to scour the stores and daven.
I’m not such a big shopper, so I couldn’t tell you the best places.
If she finds something that isn’t tight but is a tad too short, she could try getting the skirt in a size or two above what she wears and allowing it to fall lower (okay, that only works if it’s under a dress). Always check the hem to see if there’s enough to let down to make a difference!
Hatzlacha rabba!!! 😀