I don’t think she can be trusted.
It’s a sad story. This has happened to other girls. For whatever reason, they become enamored of Islam and ISIS, and go to the middle East. They become slaves in ISIS territory. Then they decide they don’t really want to be ISIS slaves or in a forced marriage. This is likely what happened to her.
She probably wants to go back because there are more moslems in Germany than where she is,
I think you are right about her not being trusted but I think that we need to get as many of these girls back who were radicalized on line. most of them who travel to the middle east end up learning how much a lie Islam is when they get to the middle east. the ones who come back can serve to educate the young about the real intent of Islam but they have to be watched.