I've come across the following dialogue in a piece of fiction I was reading
today;

> あの子さ、あたしら相手だとついお母さん役しちゃって、全然甘えないじゃん？

I'm not sure if I completely understand what the speaker is saying here, I was
wondering​ if the above contains some sort of idiom?

Is it perhaps similar to this;

> 相手の好意に遠慮なくよりかかる To accept someone's favour without reserve and depend on it

Thanks in advance
CC BY-SA 3.0
2017-03-17T19:39:16.087
44539
2017-03-18T06:34:07.013
20315
question
translation meaning idioms
Is 相手……全然甘えない… idiomatic?
Yes, 甘える here means exactly that; to let others help her, instead of doing
everything by herself. あの子 behaves as if she were a mother, but the speaker
wants an equal relationship where everyone takes it easy and casually helps
one another.

See: [Meaning of 素直に甘える in the following
sentence](https://japanese.stackexchange.com/q/44347/5010)
CC BY-SA 3.0
2017-03-18T06:34:07.013
44558
2017-03-18T06:34:07.013
2017-04-13T12:43:48.447
-1
5010
44539
answer