
It could be though that she had a false start bleed for a few days stopped and then started all over again, have had that happen so she could in fact not have had a season for 35 days.
I would pop her to the Vet to check it isn't an infection brewing.
I did have a season go on for a full month in one of my girls who went on to have a lst litter on the next season.
the Vet said prolonged seasons are often a sign of cystic ovaries, but I suspect a stop start first season myself if there is no infection.