Oh my darling girl, what a horrible experience for you.
I am a medic in the Southwest, and agree with what
@Miss Lulupops said. The 2 week wait is the standard method of diagnosing most cancers. Occasionally it can be diagnosed as a result of an A and E visit, but only if the original presenting condition (lump in groin) warranted immediate scans/ultrasound. The rest of the description re sedation, treatment etc, sounds highly unlikely too.
As part of my role I have visited nearly every hospital in the Southwest and they all now allow gifts and cards. Flowers, as you say, vary from ward to ward.
The part that absolutely tells me that this story is highly suspicious (although elements may be true) is the bit about the phone charger having to be sneaked in. Complete and utter bullshit! Nearly every patient I see (including lots in their 90's) has some form of mobile, even if it is an old brick type phone. I have never known of a single ward who wouldn't allow a charger. Applying a logical thought process, why would his phone be openly by his side, but not allow a charger.
I have no advice re how to deal with this, but hope that you are able to move on and see that this has nothing to do with you as a person, and is completely the result of someone else being deceitful and probably deranged.