PIP assessment

[Babyaj2k11]

Hi all, had my first pip assessment today via phone call. I am applying due to severe OCD. Now I am worrying and obsessing over the assesment.
Just wondered if anyone had any experience in this, alot of questions I was expecting never got asked and I'm wondering why.
One of my main issues is that I don't leave my house....almost at all. She asked what I do leave the house for, and I said if the doctor has to physically see me then I would go in my mum's car, luckily my Dr knows all my history so mainly deals with me on the phone. So other than drs appointment I don't go anywhere. She then asked "if there was an emergency at school and no one else was able to go, would you go?" I felt as though she was trying to lead me and it was unfair questioning from ven that most of my OCD revolves around the health/safety of my son, so just the thought of that sends me into a panic. I answered, I don't know what I would do, I would have to go, but I would be very unwell did forced to do this.
What do you guys think? Was it a fair question? Have I just messed my application up over a hypothetical scenario?
Any advice or words of wisdom TIA X

The decision should be based on whether you can do something for over 50% of the time, so I would not think they can base a decision on a hypothetical situation that may occur rarely.

Thankyou for replying, ahh right I see I wasn't aware of that. The woman who assessed me said she was new at the job so it would take longer than expected and also someone would have to check over her work and contact me if she had missed anything. Never been through this process before and don't know anyone who has either so really going in blind x