Ask a landlord-tenant lawyer and get answers ASAP
I am sorry to hear she is experiencing this horrible living situation. Legally, she has rights including implied and express right/warranty to live in quiet. This is called the warranty of quiet enjoyment. Having her moved temporarily is an elegant option which management should provide, otherwise she could take them to court to enjoin/stop the work and be awarded damages and legal fees.
Kindly rate me 5 stars.
Have a good week.
If I can clarify anything, ask me as well.
awaiting your reply.