I would just be honest with her. You quit a babysitting job the same as any other job. If you are no longer babysitting at all(for anyone), than that is a great reason to use.
I find it is easier to do this after you have finished babysitting for a night. This way you don't have to call out of the blue. You can simply say... "I have really loved watching your daughter.
However, since I am currently seeking out full time employment, I'm finding that I do not have as much free time as before for babysitting. I just wanted to let you know, so you are able to find someone else." Or, if you are not you can simply say a variation of above.
"I loved watching your daughter. However, I am no longer going to be babysitting. I just wanted to tell you so you are able to find someone else.
Say this: "I don't want to watch your kids anymore" Or, get your other job first because then you have a legitimate reason to use (if you are the sort that has to give reasons for everything). I'm kind of direct, and a big fan of being honest and up-front in my dealings with most everyone. This has made things difficult at times, but our society has placed such high value on being "politically correct" and on etiquette that people are scared to say what they mean or even to tell the truth most times.
You don't have to say anything about the older sibling, you don't have to say anything about the little girl either. You don't really even have to give them a reason. Just be direct without being coarse - it's a fine line and it takes practice, but there's no time like the present to start!
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.