Talk to her old/ex neighbors.
While its no very reputable, a talk to her ex or ex's will get you all sorts of stuff.
Does she use different names in different situations?
Does she have a FB page? Email ? You can search an email addy on FB. Many people have one internet name ~ like layback40, such names show up all over the place. Be careful though, maybe, like mine, others have used it on some sites without my knowledge.
Reputable searches will find very little, crooks are normally one step in front of them.
If she has had a previous job, ring them & ask for a job reference.
Does she have a car? Check to see if the title is clear.
If her story changes regularly, run! People have a habit of telling a lie to cover a previous one. Eventually they cant remember who they told what.

__________________
Grumpy Old Diesel Owners Club group

I no longer question authority, I annoy authority. More effect, less effort....

1967 230-6 auto parts car. rust bucket.
1980 300D now parts car 800k miles
1984 300D 500k miles
1987 250td 160k miles English import
2001 jeep turbo diesel 130k miles
1998 jeep tdi ~ followed me home. Needs a turbo.
1968 Ford F750 truck. 6-354 diesel conversion.
Other toys ~J.D.,Cat & GM ~ mainly earth moving