I have a slow learner cousin. She is 24yo, but still, act like a child.

I was told by my aunt to take care of her last week for 1 days (Only about 8 hours).
I thought it is simple. Basically just keep an eye on her. That all.

However, I face difficulty to get along with her for that 8 hours. I really don't know what I had done to her.. she ends up even more depressed with me
I swear I will not do this kind of task anymore

Just wondering does there has any professional caregiver can go house to house to take care of this group of people?

It's not easy to handle them. You'll need lots of patience, compassion and skills. I don't know any professionals for this case, though. Maybe you can ask/Google around?

Hope you find suitable help.

I don't think it will be cheap.

Tips:
- Analyse behaviour as in girl age? (Teach her patiently like a small kid)
- Tell her you have a problem & see whether she can help you solve it. (Make her think)
- Act like you just found a solution instead of knowing it in the first place.