TBH IIWY I wouldn't change anything if she is sleeping 11h a night and is happy during the day.
The fact that she had a few times where she had less day sleep and then had a great night doesn't mean that when she does this every single day then it's going to work as well. She might accumulate OT, yk? You are anyway like a month away from the 2-1 transition starting so I would wait this one more month before changing stuff. But that's just my opinion.
In general when a baby does a short nap then he needs a short A time afterwards, but it's not right for all babies, it's something you'd need to try out and see.