We would recommend using Tecnu Original Outdoor Skin Cleanser as
it does not contain alcohol. See label info here.
However, please note that Tecnu is a strong detergent so if your
friend is allergic to alcohol, she may also be sensitive to other
After washing with Tecnu, which will remove the plant's rash
causing oil, your friend may need an anti-itch medication.
Calagel also does not contain alcohol - see label
here or she can use whatever anti-itch medication she
has at home that is effective for her.