Well, if she's not so excited about lifting and fears the bulk factor,
I would say start with something that gets the quickest results.
That way, she can get a sense of accomplishment and the enthusiasm can be HERS, not YOURS.
The fasting for results I think must be curls. You get a little bicep peak in no time at all.
Nothing TOO difficult in the beginning or, like I said, she won't stay motivated.