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Thank you for your question.
Please describe what happened and where it happened.
"Unlawful entry" can mean several different things, so I need more information.
Was she current on the rent when this happened?
Is there anything in her rental agreement that required her to give notice to the landlord if she was going to be gone for a certain time?
In which State did this happen?
Has she regained possession of the apartment?
They definitely committed a forcible entry and detainer (sections 1159 and 1160), also known as an illegal eviction, plus the theft of her personal property is a tort called conversion. Plus they invaded her privacy. They had no right to enter the apartment, nor to change the locks, nor to look through or take her property, and she has a very good case against the landlord and his or her agents.
She can get a free consultation from some of the landlord tenant attorneys listed by location here.
She needs to follow up on this with a local attorney as the Experts here are not allowed to represent her.
Most attorneys would take this type of case on a contingent fee, so it may be possible for her to get a very good lawyer without having to pay much in advance.
I hope this information is helpful.
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