Before we start, I need to know that you are aware of the two differences that will make a significant difference between your photo and hers:
Hers has leading lines going towards a logical area of light in the background. Yours does not.
Yours has lots of light area (snow) at the bottom of the photo, which hers does not.
As such, your photo can never have the same "feel" as hers.
No it's not, look at the how the light is falling on her face. In particular, look at the camera-left side of the mouth in Lisa's photo and in yours.
I would say that Lisa is using a much bigger light source that you are, but you would need to seek advice from a photographer about that. All I know is that the angle of your light is too far around to the side.
Yes, this is definitely a Liquify job.
To my mind, the key is to use the mask tool before you start. Block off everything that you don't want to move, like this:
Well, the photo on the right is too blurry, so let's concentrate on the left one.
I think you should crop with him a bit more centred, and if there's a bit of the lady in the frame, you should be able to clone her out.
Oh, this is REALLY bad.
External drives are for archiving and backup only. They're not fast enough for working from. Only use internal drives for live jobs.