She's a very complicated person. She once was caught in a lie as to why she was absent from work, the told her she would be meeting with the boss the next day. Instead of meeting with the boss she instead just said they're gonna fire me I'm just not gonna go and find another job.
I called her job to straighten things out but she didn't even know if she were getting fired but thought she was so instead was just not gonna go and then for sure get terminated..
If I ask to see her phone or else it's the door she will walk out without hesitation that's how she is.
We've had rough patches with arguments and stuff and if she were cheating or flirting around she's had opportunities to pursue them and carry on without me in her life, so if she's hiding something what would cause her not to just walk away and pursue it?
This right here should answer your question. You have only been with her 11 months and you have seen this type of behavior from her. In my opinion this is not a good relationship, so you should not be disappointed if it ends.
I would demand the phone, and whatever happens, happens...
You calling her work for her to fix things? What is she a child?