baskets - i think NHL PRO capper may be right in his suspiciousness. you should monitor her life thoroughly for 2 weeks. Set up a camera somewhere in her mom's house. get a software that fixes all messages even if they are deleted and load it onto her phone, etc.
You really love her i think - so just take your buddies car(switch cars for a couple of weeks), park it near her mom's house witth a canera - you will see where she goes and when for a couple of days. if she leaves in evenings - you could park the car with yourself inside and track where she goes.
if you catch her - you can do everything NHL PRO capper adviced you to do.
but if she doesn't do anything strange but just sits at her mom's etc. - then she's got a mental problem and you have to man up and help her solve it.
when we got married i used to talk to my wife a lot to get her mind straight - cause women often have lots of unorganized crap in their heads they even can't explain to themselves.
So do that and you will at least be sure of what the actual problem is