Please don't feel like you're not worth the time. I'm sure if your T read that, then she would challenge that negative belief. My guess is that the reality if the situation may involve a seriously suicidal client or a client who attempted such, as this involves the police. Unfortunately, if this is the case, then she has absolutely no choice legally or ethically but to handle this matter at the moment.
Please, just wait to hear from her later. YOU are important. YOU are deserving of her time. You should NEVER feel bad for contacting your T for a scheduled phone call. You do deserve more than to just manage.
Personally, if I were you, I would not text her and would wait for her call. In the meantime, find something to distract yourself.
Best-content