How tall will she get??

Hey everyone! So, my girl Arya is a 4 year old purebred Haflinger (she just turned four in April). She was born a pretty big baby, and has consistently string tested to around 14.3, but is only 13.2HH right now. Her mom was 14.1 and her dad was 15HH. How much taller do you think she will get, if any?

The most I have seen any horse grow from 4 to 6 years of age is three inches and this was a warmblood that ended up 17.1hh. I would guess that 14.1hh would be the max for your halfie give or take an inch