It's hard when the S is sick, it's a difficult call. I always want to phone but then err of the side of caution and don't. Is that detaching or being unkind - who knows? It's however you perceive it. If you feel happier enquiring about her health do so, what's to lose. Maybe a text? Less persuing than a phone call?
I suppose you should think what would be a 180 for you? If you've been uncaring during the M then a text would be good, if you've been suffocating her too much then a text will be a negative.