Girl in team logs off early all the time and takes sick leaves - I have to do her work.

A girl in my team logs off early all the time saying she is sick or she has an emergency, she takes sick leaves and other leaves often and her insta stories show that she is chilling with her bf while I am doing her task. I am left to do her job and I get no recognition. She later assigns the task that I did to her pushes it in jira. Moreover she has the manager in her pocket , he keeps saying to her that since your plates are full -i should help her with her task. Her plates are full with being a lazy freeloader.

My TL knows this but my manager turns a blind eye . What are my options? How should I proceed with this shitshow.