worthingmale,
Reading your story, I must say it doesn't shout out scam.
Seems like everything was going along fine.
If her father was ill in hospital, you can be sure that she will do everything possible to support his medical needs. This would include selling the laptop if necessary.
Maybe she felt you did not provide the support to her she expected. Who knows.
That she has failed to contact you at all, despite the fact that you have tried a number of times to phone, text and e-mail to her is worrying. I agree with sweetnote, where there's a will there's a way. A simple text to someone she cares about is certainly an easy thing to do.
Personally, and sorry to say this, I cannot think of many circumstances where she is unable to make any kind of contact for 2 months if she still has your contact details.
Especially if there were no relationship issues at the last contact. Maybe she just wanted a way out if something did happen.
There's been some good suggestions, such as a letter to her home or some form of contact to the hospital or to her known friends and other family.
For me, I would try to somehow get to the bottom of this.
Maybe even some forum members could help out locally in some way, like contact to the hospital etc.
As others have said try to keep a positve open mind on all outcomes
