She may well go up the wall! (3)
I believe the answer is:
ivy
'she' is the definition.
(woman's name)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for ivy that I've seen before include "Common climbing evergreen plant" , "Clinging vine" , "Vine with evergreen leaves" , "Creeper plant" , "Bush" .)