Definitely not Christine Alexis.It is strange that it is not possible to find any other picture.Or any information about her.I checked all the leading erotic sites.Someone cut the images so that it is not possible to see the watermark.
Do you have any other images of her - more than just these three or where you found them or maybe even when you found them ??
It is surprising what little piece of info will find these models.
Cropped image , mirrored, just a Face shot - I've even seen just a vag shot do the trick.
If you have anything else - it Could possibly help.