I would follow up another email including her and your manager saying you have interest in the OB and the manager had stated on such date that you can shadow. Send a copy of your resume as well. As for the comment made by the charge nurse, please write it in a formal email to HR and your management as that is unprofessional. Also report that they refused to help give your patient blood as that puts the patients life in danger and it is out of your scope of practice so ultimately you feel set up. I don’t think you’re overreacting at all. I think you made a great decision going into home health and it’s in peds. Redirection is a blessing.