I wouldn't trust her as far as I could throw her with money after that story..But then that is easy for me to say considering that I am not emotionally involved.
We see situations like this on a regular basis (in our apartment building) with certain girls getting mugged at least twice a month to raise more cash from their boyfriends/husbands so that they can lavish their real lovers with little luxuries etc.
If you have her investigated,you are almost sure to find out that there was no robbery and you may well find out a whole lot more too..
At the very least have her story checked out at the Police station that dealt with this "complaint".
Im sorry to be so blunt but I do believe you are either dating a scammer or just someone that thinks that you have so much cash that it wont make any difference to you anyway.
Its nothing to do with culture..Just bad up bringing.
If I am wrong then that would be great..I truly hope that I am.