Yeah, the TR is only there for somewhere to moor, after being told to move from the Riverside due to redevelopment and was said to be out of keeping to the development. Or something like that.
I wouldn't be surprised if she joins the Princess. Or there was talk that she could be preserved down Dover way, after it was uncertain to what her future hold as talk that she could be scrapped were circulating. The Northern Echo earlier this year or last year, ran a story about a possible move to preserve her down Dover, as she used to work there.
As far as she has been in TERRC it is only been as somewhere to moor, untill another use/ location was found for her.