PKP, you can't just finger guns for every situation.
Can't blame her. Probably due to being reused graphics, about 85% of T-dolls have their right hand in finger gun gesture in dorm. Because, you know. Their guns are not there.
A good number of HG T-dolls avert this since they hold their gun with their left hand. And some odd Tdolls like AAT52 simply do not have finger guns (or maybe it's just too subtle to be noticed).