Reading your post made me feel so panicky - I could have written something very similar. My mum lived in our garden so no travelling between my house and hers although it was downstairs, across the garden and back up the drive to her door! Not fun in the rain!
So rather than travel/a few hours care/travel it was in and out 10 times a day. Mum had two care visits a day - to get her up and give her breakfast and to help her to bed. I did everything else so my day would be like this:
11 o'clock ish mum would phone to say she was up and wanted to see me.
I would have to go back around noon to put the tv on and sometimes I would watch tv with her.
If I hadn't watched Bargain Hunt I would go back out at 1 to take her to the toilet and make her lunch - about 45 minutes
2.30 ish - back to take her to the toilet
4.00 ish - toilet (each toilet trip would take 30 mins)
5.00 ish - watch Pointless with her then take her to the toilet.
7.00 ish - take her dinner and stay with her until the carer came at 9 ish.
While with her in the evening I would sort her clothes for the next day and put on the tv in her bedroom so she could watch in bed.
She would often phone me around midnight to say that she had been to the toilet and couldn't get back into bed, or she thought it was lunch time and the carer hadn't been and she wanted lunch.
In between those visits I would get calls to say that she wanted a drink, she couldn't get the phone to work (yet she could call me to tell me), there was a problem with the tv (she could not work the remote), she couldn't find her hanky, she thought there was someone in the garden, she had heard someone outside calling my name - call after call.
Plus I would do her cleaning, laundry, shopping, finances, facilitate her social life. She hated having carers and felt that I should do everything because:
"Well you are supposed to be my carer" and that annoys me because I do so much and feel like she doesn't realise I need time to do my own things at home.
We were very close (I am an only child, dad died 10 years ago) and I sort of fell into the role of carer from being the one who pushed her wheelchair and cooked her meals to doing everything my dad would do when he died and then being her hands and feet with no option of a life of my own. I could not leave the house without having to see her and check on her before I went and when I came back and towards the end I was unable to leave the house unless my (married) daughter was able to sit with her. My husband and I couldn't go on holiday without arranging for someone to stay with her or for her to stay with my cousin.
Now she is in a home and I am slowly getting my life back.