Permission to attend interview

[beatitude]

I have a part-time job that I love. The salary is quite low and it's not enough on its own, so I've been looking for other part-time work to make ends meet. I've been invited to an interview this week. The problem is that I will need time off my current job to go. (The prospective employer is unable to change the interview time - I asked.) My boss hasn't responded to my request for time off, and I felt bad even asking, as I've already missed a lot of time in November due to my mum's recent heart attack and an appointment I had myself. Please pray that if it is God's will I will be allowed to go and I can get this job.