日本語 Japanese Ask Questions Thread 4

If you have a question about the language, ask it and fellow 4channers might see it and answer it for you.


Japanese Ask Questions Thread2
http://dis.4chan.org/read/lang/1206158123/1-40

Japanese Ask Questions Thread3
http://dis.4chan.org/read/lang/1267485093/1-40

I could use some help understanding the last part of this section:

「砂漠に咲く一輪の花」……
そう呼ばれた時期もあった……
ということにしておいてくれ

First of all, this is a young lady saying this line to another young lady if that adds any context. I believe the first two lines mean, "'The lone flower that blooms in the desert' is what I was once called..." However, I'm unsure of the last line. If someone could help break down the usage of "にして", "おいて", and "くれ" and how they fit together, that would be very helpful.