Help me decide what to do

Kinda an odd situation, but idk what to do

My family went snow shoeing (basically just hiking in snow) with one of my friends. On the way back, I noticed her staring at the tv that's in the car. Since it was turned off, you can see reflections through it and it looked like she was staring at me. Idk if she was actually staring at me, staring at something next to/behind me, or just tired (she stares at random things when she's tired).

Should I ask her if she was staring at me or not? I feel like I shouldn't since she always gets insecure whenever I point something she does out. For example, now she doesn't like eating baked potatoes in front of me because I asked while she was leaning so far forward one time