She's suing?... for what? I'm sure that she parked illegally will come up.
I'll give a more useful answer this time. The worst that can happen, IMO, from her being parked illegally is that council officials can use the CCTV footage to issue her with a fixed penalty notice.
Irrespective of the legality of a parked vehicle you can't go plowing into them with impunity. The bus driver is at fault for the accident therefore its reasonable that the costs of repairing or replacing the Porsche will be met by the bus drivers insurance company.
As for sue, whilst technically you would sue somebody for this the insurance system means that in reality this doesn't really happen (Unless its disputed and gets taken to court obviously) so its probably crap reporting by everyones favourite text covered toilet roll.