Rose should ask for help if somebody is near her so she can go to the nurse and go home and go to the hospital to get it checked.
Isostatic stretching is a flexibility training which is in a advanced form. It should be performed with CAUTION. It is important to avoid isostatic stretches because they can disrupt muscle growth and it fatigue the muscles. Its recommended to do some warm up before doing these stretches honestly.
She should do her best to sit him down alone, and see how he is feeling.
She needs to have a discussion with him, not an argument. If he is going through something, alcohol may just be an outlet.
The best thing is to make sure he's okay, and for her to lovingly express her concerns. =)