Thanks for your question on Healthcare Magic.
I can understand your concern.
Only painkiller drugs are not always beneficial in
costochondritis for symptomatic relief.
You need to worry follow certain lifestyle modifications for this.
With drugs and lifestyle changes, usually recovery is seen in 2-3 weeks.
So better to start these lifestyle changes.
1. Avoid movements causing pain.
2. Avoid bad postures in sleep.
3. Avoid heavyweight lifting and strenuous exercise.
4. Apply warm water pad on affected areas.
5. Wear rib belt or chest belt to prevent minimal mobilization of affected areas.
6. Sit with proper back and chest support.
She will be alright with all these in 2 weeks.
Hope I have solved your. I will be happy to help you further. Wishing good health to your niece. Thanks.