Construct a sentence using complex sentences with three subordinate clauses.
Although she studied hard for her exams while balancing her part-time job, which required her to work long hours, she still made time to volunteer at the local animal shelter, where she was able to make a positive impact on her community.
Complete the following task based on the instruction and optional input provided.### Instruction:
Construct a sentence using complex sentences with three subordinate clauses.

### Output:
Although she studied hard for her exams while balancing her part-time job, which required her to work long hours, she still made time to volunteer at the local animal shelter, where she was able to make a positive impact on her community.