Hi Sadly, wanted to say I read your post and I can identify with many things you have said. Being depressed and feeling alone and trapped in a seemingly hopeless situation is one of the worst feelings for me.
You mentioned that you have been seeing a counselor but haven't seen any progress. Do you think you could benefit from a change of therapist or a change of your therapy (change in meds or take a different approach)?
The IOP might not be such a bad idea. If you have the financial possibility to do the IOP why not try and at least visit one session? You don't know if you won't meet friendly people there and find the help you need unless you try. I would give anything a chance. Even if it turns out to be a waste of your time in the end, trying out something new is better then spending time by yourself at home. Keep posting here and if you want to talk you can always pm me. Take care