That's part of the woes of being part of an aging population demographic, I fear. >_>;
* * *
The starboard wingpod, which is where Rin is, has a door that leads to the starboard capacitor room - which was shot and blew up, opening pretty wide to space.
Rin wears an AMES suit, which in itself is a spacesuit (she's supposed to be wearing the helmet, so she ought to be fine. On the doorway, Rin can setup an atmospheric field to make sure there is no loss of air in the wingpod, and then cross through to be in the ruins of the capacitor section.
Close to the door, on her left, there will be a valve not to far away. Rin can then move there, grab it and then turn it until the coolant flow stops (when the section got damaged, the plumbing was torn off, so, all the coolant fluids going through it are instead geysering into space).