Too bad she's limping.She looks very good.
When mine have this,I give them Mobic 2x day,then in a week maybe once.Sometimes an antibiotic combined for a few days as well.My vet gives me 1.5 mg.2x day by dropper,Mobic.
Hips commonly bother hens.Jumping on high nest or roosts makes it worse,just playing sometimes.I usually put them in cage at night until healed as well.Has never exceeded 2 weeks.
Can happen young age too.Mine have always gotten better quickly,luckily.
Without treatment,or changes, it may not get better.