Is there a trusted neighbor that you could trust to sit with your daughter while she waits for the bus. Maybe pay them a little money or a Starbuck's gift card every so often, so that you would be able to make it to the job on time if you are selected? It is good that it works around your kids school schedules and summer's off. The pay may not be great, but hey that is how it is with alot of jobs these days because it is an employer's market these days. Too many people unemployed, so they do not have to offer big bucks to get employees.
Wishing you lots of good wishes on your interview. Let us know how it goes.