Hi Aprilfool... I think the first pic is the best option where the background will detract from the shot (as it does in shot two). However you need to be careful with lighting in any portrait pic, closeups even more so... this one suffers a little too much reflection. Also you could play around a little in
PS to flatter the skin tones a little, as the 50/1.8 can be a harsh critic.
Composition of the second shot is all wrong... the subject isn't looking at anything we can determine, away from the lens so we lose the glitter of her eyes, and the lighting is casting unflattering shadows on her rightside.
Finally, as Chris mentioned, the background detracts from the shot.
Keep at it though and you're sure to capture a gem with this subject !!!