Need to research and know what to expect

Last June, my best friend was seriously injured when her taxi hit the back of a flat bed truck. She was on a ventilator, had several operations including repair to broken bones in her thighs and a graft for a burn. She had a concussion. I visited her several times, but she was on pain meds and didn't recognize me. I decided to forgo the visits for a while and send her cards. She wrote to me and during the last couple weeks and left a phone message. Finally, we arranged to get together yesterday. I was worried about finding her at the facility for brain injured where she lives. Fortunately, a staff member was in the parking lot and walked with me to the dining room. I had misconceptions, so the visit was stressful. My friend is immobile, in a wheelchair, and has edema. She did converse with me and introduce me to other residents and staff. she felt hemmed in and was preoccupied with the logistics of getting out of the dining room, mentioning this multiple times while I was eating. I wasn't prepared for the number of brain injured people in heavy wheelchairs, the degree of injury, the smells. My friend had a doctor appointment, and I was glad because after a short time, I was overwhelmed and wanted to go home. In order to prepare myself for new situations, I need to research and know what to expect.