I want to tell my T, but I can't

My T is a lot more pro hospitalization than I am. I know it probably sounds crazy, but I saw someone, a prominent someone, in my bedroom, and they're mocking me. They're bothering me. I would like to talk to t about this, but she'll just think I need to go to the hospital. I CAN'T do that. I've been threatened with permanent residential care before, and I can't do it. I'm not crazy. I just need to be able to cope with this "person."

So you are having visual hallucinations? Do you have a psychiatrist? Perhaps you need to contact him/her, or if you don't, perhaps it is time to consider seeing a psychiatrist who might be able to help you manage those kinds of symptoms.

there are some resources mentioned at the end of this ted talk, perhaps they can be of use?
Eleanor Longden at TED2013: Living with voices in your head | TED Blog
I know you are speaking of visual stuff, but along the same lines.
She talks about her experiences with the mental health system, medications, etc, then how she figured out how to live with the voices rather than fight against them...

I would pre-empt it with "I'm not going to the hospital but...." I do it to T all the time.

You need to find someone you can talk to. Someone who isn't going to send you to hospital. Is there a support line you can phone?

This is good too. "I've got something to tell you but first you have to promise not to send me..."

I did, but I don't anymore. He said he didn't want to see me anymore, so now I don't have one. I can't find another one either.

I might just tell my t anyways. I don't know. I'm really just going on some off hand remarks she said about how it was too hard for people to try to get the mentally ill in to the hospital. Maybe I'm worrying too much? As long as she doesn't have grounds to force me to go...Then again the laws on involuntary holds are a little murky where I'm at.

Your T cant force you to go impatient unless there is an imminent risk to s.o.'s safety. She can offer her opinion on things but that's about it.
Hallucinating could be for several reasons (physical and mental)- do you know why you are hallucinating?

The thing is, where I'm at, it's not just about safety. They can hold someone for being "gravely" mentally ill. That's where things get murky. It can mean something as simple as person x hears things and thinks they're real. (Even if the voices are benign.) Or it can mean that they're not capable of taking care of themselves, in someone's professional opinion. I'm not real sure where the line is at.

Do you have a plan for the things you hear?

I can live with the things I hear. I mean they say terrible things, and they sound so real I can't tell the difference. (Part of the reason my pdoc fired me.) Still, if I can look around and not see anyone mouthing what I hear, then I can "ignore" it. It's still upsetting though. It's just not as bothersome as this person living in my room.

I would tell her. Why is in patent not an option?

Last time I was inpatient I had to make a fake recovery. Without even questioning me they said I'd been on too many different pills and been to the hospital too many times. They said they were planning on moving me to a live-in facility. I have a life. I can do okay to some degree. I have limitations. I just need some support.

I don't have visual hallucinations or hear voices but at one point I could swear someone was walking up my stairs. I would be in bed and just freeze. I told my T and my Pdoc (at the time...I have since fired her) and I asked my Pdoc to put me on Clozapine. I am a CPhT so I know all the drugs, what they are for, side effects, etc. Well, the Clozapine really worked. I no longer hear the footsteps. My T did say however that she just thought the footsteps were a part of my C-PTSD...like I felt like my mom or my H was coming for me.