Ellie wrote: My Social worker also advised that she felt that having to attend an assessment would be likely to worsen my condition- do you think that the assessor will take this into consideration when deciding whether or not I should attend an assessment?
They may do, but from what you have posted, the implication is that there is no actual restraint on you attending and the possibility of you being affected by doing so is not certain, so I think it likely that it will be insufficient.
Gordon