New member of staff recently started who lives relatively close to me. One of the bosses told her to ask me about lifts and ask for my phone number! She doesn't drive, has to cycle to the station. I really don't want the responsibility and commitment of getting someone else to/from work. I'm often nipping here and there straight from work and then there's timings as well, I tend to be in early/out early. I don't mind the odd one off if she's stuck but really don't want it to be regular. I've said this (awkward conversation) but it came up again recently about the winter, how dark/cold it will be so I think she will ask again.
Am I being unreasonable to stick to my guns and say no? I feel a pang of guilt about it but she must have known the commute would be a pain when taking the job.