Regarding Tessa and memory, there is a fascinating study done about failure of memory. In other words, it is difficult for individuals to remember something correctly after a traumatic event, particularly if given false information in conjunction..
Lost in a mall
If Tessa's memory is something she remembered 'suddenly one day', it might not necessarily be what she remembers. I am in no way discounting what was clearly painful memory, but events remembered years later are dicey.