That is a pretty good summary @outlander. Now the trick is to not look at it as a whole but break it down into the things you can 'control' and those you can't.
You can 'control' the pain a little with medication - not ideal or a fix but an easing (however small).
You can control your breathing and reduce the pressure in your chest from the panic attack - slow, deep, focussed breaths. Concentrating only on breathing in slowly and out slowly. That will also reduce your heart-rate and lessen the chance of another panic attack.
You cannot control what other people think or say - as much as these things hurt - they are not YOU - you are what you know of yourself (and no negatives here - you are a creative, caring, compassionate and hard working young women - they are facts that cannot be disputed as we have seen this time and time again here)
You cannot control the outcome of your Pop's surgery - you can worry about how it will go but the outcome is not something you can control. Tell yourself that yoiu know there are risks and the prognosis may not be great but you deal with that when you actually know.
Above all @outlander stay calm - composure in difficult situations can calm both the body and the mind 
Help us push aside the stigma and discrimination surrounding complex mental health and change the way people talk about, and care for, mental illness.
SANE acknowledges the Traditional Owners of Country throughout Australia and recognises the continuing connection to lands, waters and communities. We pay our respect to Aboriginal and Torres Strait Islander cultures; and to Elders past and present.
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Help us push aside the stigma and discrimination surrounding complex mental health and change the way people talk about, and care for, mental illness.
SANE acknowledges the Traditional Owners of Country throughout Australia and recognises the continuing connection to lands, waters and communities. We pay our respect to Aboriginal and Torres Strait Islander cultures; and to Elders past and present.
SANE values diversity. We are committed to providing a safe, culturally appropriate, and inclusive service for all people, regardless of their ethnicity, faith, disability, sexuality, or gender identity.