My dad had a minor smash -not at fault.
A smash repairer was recommended by NRMA ,who took 5 & half months to repair the car.
NRMA provided my dad with a car during these 5.5 months but I asked the panel beater for a change of battery as it was sitting so long. The battery was changed no argument.
On driving it I noticed the brakes are no longer as grippy and the steering was very heavy.
I have left cars undriven for 6 months or more in the past , when I worked overseas and noticed that the brakes/ power steering sometimes take a couple days to start working ok , other times if things are not back to normal after a couple of days , I get a brake and steering service.
Fix car, ask you should hmmmmmmmmmmm?