what does "i couldn't have been gone more than an hour, an hour and fifteen"mean?
“Then we’ll take it away,” he promised. “So go through it with me.”
“I went out, walked to the village, spent a little time in the gift shop. I bought an ice cream cone, came home.”
As she spoke she poured the lemonade over ice, added a plate of crispy cookies to the table. “I couldn’t have been gone more than an hour, an hour and fifteen.”
“Did you lock the doors?”
“Yes. I’ve been careful, or mostly careful, about that since the break-ins at Bluff House.”this sentence is conflict, isn't it? the former part=she didn't leave more than an hour, that is to say, she must be back within an hour, then what does "an hour and fifteen"mean?