A bit of background:
My child started school last September. My job at the time enabled me to walk him to school each morning and drop off at the usual time. After a few weeks, one of the mums approached me to ask a favour. Her work situation was changing and she wondered if I'd be able to pick her son up and take him to school a couple of times a week. She made it clear that I could say no and didn't pressure me at all. We walk past the road they live on, so it's a small detour. After thinking on it, I agreed to do it as it would save them the money for breakfast club and I really didn't mind helping out. I took him in four days a week (the other day wasn't convenient for me).
I get on well with the other mum. We talk a fair bit, and she's been aware that I was looking at a change of career. I've worked hard this past year and gained qualifications to support a career change. Back in June, I managed to secure a job which starts in September. I told other mum straight away and made her aware that my son would be going to breakfast club every day so she would need to make other arrangements for her child to get to school.
She didn't say much at the time, but recently she approached me to ask if I could pick their child up and take them to breakfast club when I take my child. I felt a bit 'on the spot' so didn't give a definite answer. Like last time, she's not pressuring me for an answer but I can't help feeling like this time the request is a bit cheeky.
For context, when I was picking her child up she was often still home or only just left for work. Me picking the child up meant she could be on the way to work 15/20 mins earlier but she doesn't need to leave too early in the morning. Throughout the school year she has started working from home a couple of days a week but I was never aware of which days she would be doing this. She would sometimes join us for the walk to school on these days. Sometimes I would be waiting a while for someone to come to the door and it was clear that the child had only just woken up and got dressed. Quite regularly the child would be eating biscuits on the way to school because they'd not had time for breakfast. Obviously, breakfast is not an issue from September as they will get fed at school but I'm concerned that the child will not be ready/awake and even if they are I would need to leave 5 mins earlier than if I was just taking my own child.
I feel a bit petty as 5 mins isn't all that much, but at the same time my mornings are already going to be very busy to ensure that myself and my child are ready to leave the house an hour earlier than we currently leave.
I'm also struggling to understand why she cant take her own child. She basically said that it would be a mad rush for her to get herself ready for work and the child ready and dropped off for breakfast club. But if she dropped the child off the same time as I'm taking mine she'd have another hour at home to get ready afterwards before the time she leaves for work... Or she could drop the child off a bit later. They don't have to be at breakfast club at a specific time.
While it hasn't been a huge pain to take her child into school, I hadn't expected to continue doing it for an indefinite length of time. There have also been those mornings when the children squabble or mess around on the way to school and I was looking forward to not dealing with that from September...
So WIBU to say no? Im not sure if I'm just unreasonably irked with her talking about how manic her morning would be, when I will have an equally manic start to the day and she's happy to add an extra job for me to do 