在她开朗活泼的性格之下又有着一点阴暗。她其实很喜欢黑暗的一面，但又害怕

在她开朗活泼的性格之下又有着一点阴暗。她其实很喜欢黑暗的一面，但又害怕走的太深，因此她总是表现得轻松愉快。

結果 (英文) 1:

Under her cheerful personality and a little dark. She's like the dark side, but was afraid to go too deep, so she always appears to be relaxed and happy.

結果 (英文) 2:

Under her cheerful personality also has a little dark. She actually liked the dark side, but too scared to go, so she always behaved relaxed and happy.

結果 (英文) 3:

In her cheerful and lively character under a bit of dark. She's actually very dark side of love, but afraid to go too deep, so she always appears to be relaxed and happy.