what a horridly stressful situation.
sounds like a money grab on the landlords behalf.
call the tribunal or tenency board yourself.
all youve listed sounds like general wear n tear to me. and to get the cleaning done without giving you the opportunity to do it yourself or get your own cleaner is certainly not fair or tolerated by the tribunal.
seriously a bird feeder and an outdoor chair! if she valued those things she should have taken them with her.