To ask to change interview time

[SwanLake66]

Dd only works 2.5 hrs a day at the moment doing a lunch time job. She's applied for another job which she can do as well as the current one. She's been given an interview next week which is very late morning and won't give her time to get to work. So does she cancel work or ask them to change interview time?

Just ask them to change the time. Plenty of people have commitments that are difficult to rearrange, the interviewers will probably realise that.