The temperature was so hot and Anna didn't want to torture herself by going out of the base at that time. As for other time, it was either the sky was too dark or too early and might not be able to return in time.
Anna had confidence in her strength.
But she didn't know how she would perform if she were to be attacked by others in the middle of the night outside.
It was harder to look at her surroundings when it was dark.
She didn't want be overconfident and overestimated her strength, so Anna refused to go out. It was not very important either, so Anna didn't go out during this period of time at all.
The barrels that Anna took out was a bit small. At the very least, it was possible to put them her car. After thinking for a bit, Anna folded the chair in the backseat so that there was enough space.