M.B.
As a first grade teacher I can say that this is very normal for her age and being left handed but there are things that you can do.
I have them fold their writing paper in half and always be aware of which side to start on. Put a red dot where she should start her name on the left side of the paper. Also have her write letters or marks beginning, middle, and end on the paper. This cultivates "brain order" or being more aware of the order of writing.
For instance everyday they get a piece of writing paper for children available at school supply stores with lines on the paper and it is best if you can get the one that has a red line for the baseline. I cut the paper in half. Then they are taught to fold it in half and be aware of the beginning, middle and end. We say it over and over as they write on each line.
Suzy
Aa Aa Aa
Aa Aa Aa
Aa Aa Aa
etc
We do this each day with each letter and say out loud big A, little A, beginning, middle end and they will with repetition learn where to start writing.
Thanks for caring.