A picture is worth a thousand words. Gather your medical records as well as before and after pictures to local malpractice counsel who will...

Retain the "wood chip", but know that any injury that does not require medical attention will not warrant legal intervention.

Write a letter detailing your concerns to the nurse and the school district. As it is unlikely that any material harm befell your child there is no...

Thankfully you are not injured in any material way, so therefore it would not be economically viable to pursue a malpractice lawsuit.

You might be limited to workers compensation but this is very fact specific so if injuries warrant consult local counsel.

She may have a case assuming there are significant residual damages that she is still having to deal with.

Would suggest that ask current counsel to partner up with an attoney they know and work together to get you the best result.

If there is proof of criminal activity get local law enforcement involved. If there is proof of negligence on the part of the homeowner there may...

Witnesses can be served with a subpeona to testify, but are not to be compensated in any other manner for their testimony.

You complain about the mold but you don't list any treatable injuries. Without a diagnosis and treatment there is nothing to sue over.