Piston cylinder is knackered. Looks like piston has been incorrectly fitted to cylinder they just don't curl over like that in use. Cylinder initially presented on an angle then twisted straight up to fit.
Lot of cheap chinky seals about doubt they handle heat too well. If you drive around at normal height may have got extra month out if it
Rest looks in good order though. Storey Wilson shows the method how to wangle the piston in on an angle in his video.
Did you get her number - is only reason she bumped into you