How hard is it to care for a person who's had a stroke? She has the mentality of a child.

It depends. I imagine there will be physical issues as well as cognitive problems, there may also be challenging behavioural problems.... anger & violence or despair, weeping and non compliance. Don't sign a contract until you know what you are dealing with.

Are you wondering whether or not you should accept an assignment?

How hard you find it will depend on what aspects of care you personally find most challenging. What sort of clients have you cared for before now? - what were their main difficulties, I mean.

My dad had a stroke and became bedridden. He was fine mentally, just his left side was weak, and he couldn't use his left arm/hand. Changing his pamper was difficult - even with his help. Sometimes, his right hand would get too tired holding the hospital bed's railing, he would let go. His whole body slammed to his back. If I wasn't quick enough, he would have landed with my hands still under his back (adjusting or cleaning his backside.) Sometimes, he would keep moving while cleaning his backside, and it's very difficult because of that. It gets frustrating because I would tell him to stop moving and he would stop for about 30 seconds, then he'd to back to shaking.

My mom also had a stroke. She was weak on the right side. She was also violent. It took a lot of concentration to change her pamper, her clothing, etc... and still be dodging her punches/slaps. Dad had to hold her hands while I did the cleaning.

Feeding? Can the person swallow food, grinded food or pureed? Do you know what to do if they start choking on their food? My dad experienced that a few times.

I agree. It would be best that you see the patient and then you can ask questions. I've had new caregivers come to our home. They always asked dad his history, what he can or cannot do. Sometimes, I chime in when I know that Dad wasn't being very truthful. Before seeing the patient, I would have a list of questions to ask.

One of my first questions would be is how much does she weigh, if she is heavy do they have a hoist etc or will there be someone to help when necessary.
you need to know the patient's allover weaknesses and abilities.
The conitive difficulties may not be a problem. No one can guess at behaviour problems without seeing and talking to the patient. it is important to know how she behaved prior to the stroke.and what other disabilities she had.
She may be as quiet as a lamb and smile angelically all day or be a complete horror story. Fighting you ,kicking and biting, spitting food all over the place, smearing poop on the walls,refusing to keep her clothes on. Not co-operating with any healthcare professionals especially you. Constant infections including pneumonia and especially urinary tract infections.
If you want to take this assignment agree to go for a one week trial.
If the patient did not have dementia prior to the stroke she is unlikely to get it now, although if it is pre existing it can cause a rapid progression or she may develop vascular dementia.
If you will be working through an agency all the legal paperwork will be covered. however as a private hire you have to be legally covered for things like workmen's comp and the employer must with hold taxes and all other deductions.
To answer your actual question. It could be very easy with simple supervision, meal prep light housework, or it could be care for a totally helpless uncooperative, unpleasant, incontinent
patient who never gives you a moments peace
if this is a private hire make sure your employment if djc