She could try what I did. I decided to not buy a pack of cigs and just vape "to see" if I could do it. Hit the vape all day. At the end of the day, I realized I didn't smoke all day. The test for me was the next morning; I always had one with my morning coffee. No biggie, if I really needed one I'd buy a pack on my way to work. Realized I was okay as I drove in to work. Day two, no ciggies. Just kept going from there.
I truly believe what helped me get off the cigs was NOT having them around to tempt me. Others can have opened/brand new packs lying around. I know myself, the temptation would be too strong.
Now I can vape with a bunch of friends smoking and the desire to "bum" a cig doesn't even enter my mind.
Or...she could try buying cool flavors like pina colada and strawberry chocolate if she can find them somewhere.