Mine is a girl. She will get longer than 9 feet for sure. She was 7 feet when I got her a week and half ago. Her hide is starting to look a little snug. She was lifting it up after eating last night. 2 chicks and 1 medium rat. Chose a smaller rat because of giving her the chicks.
I hope Rainbow stays a good girl. She is so mellow so far.
I think she'll be fine.
Usually it's the males that get a little edgy when they get to breeding age, however I think it is more seasonal than constant.