She had a true sisterly feeling for her brother.
她对兄长怀有真正的骨肉之情。
a blood relation:骨肉之情 肉亲
a blessing and a curse 双刃之剑 両刃之剣 | a blood relation 骨肉之情 肉亲 | a bohemian 自由奔放 自由奔放