the benefit of the doubt

a favorable judgment granted in the absence of full evidence*
( ~a judgment in one's favor when the evidence is neither for one nor against one. ( typically: get ~; have ~; give someone *

پذیرفتن و باور کردن حرف کسی و اعتماد کردن به آنها هرچند که مطمئن نیستید راست می گویند.
To decide that you will believe someone, even though you are not sure that they are telling the truth.
to believe something is good about someone, while its chances of being bad are equal in reality
Lets give her the benefit of the doubt and assume that she is right.