I think it's important that the T sees things from your perspective and doesn't make assumptions about how your past experiences affect you today.
To her, your past experiences seem horrific, but it could be somewhat detrimental for her to try and convince you they are worse than you feel they are. After all, these are your experiences.
If you don't think you have PTSD you are within your right to say so. At the end of the day, how a therapist feels about your past isn't particularly relevant. The process is about exploring your own experiencing of the issues. The way you feel about them is paramount.