My daughter is experiencing throat tightness. the following also describe her: feeling anxious and grinding teeth. what should she do?

Throat tightness...: Anxiety. Three suggestions. First, a Physical by your Gp to rule out organic or systemic disorder. Second, get a Mental Health Professional involved to help her deal with the issues that she's going through. It's really tough to be a teenager. Third, have your Dentist check her occlusion. Orthodontic treatment and/or a splint to protect her teeth from harm may be in order.