I think part of the issue may be the EC’s that take up all her time, and not living near her peers. I think this just has to hurt her so much, some of which are showing up already with this seminar.
If it were one of my daughters (STEM-y like yours), I’d tell them get a tutor asap, then take the W as late as possible if they can’t squeak it out, drop down to 1 EC (at most), and move into the dorms.
I would want my kids to have as much support as humanly possible, and I think it’s going to come from their peers in college, not the administration.