Pistils are orange/brown at the calyx. Is this normal at this stage? (DAY 86 total - DAY 38 Flowering)

Brown pistils shows probable pollination. You should have some seeds. Watch out for hermaphrodism signs and try to keep it under control by removing growing bananas, pollen sac, or a whole plant, of course at last resort. Sadly, thai genetics is notorious for hermaphrodism and growing from a random bag seed, is also an other risk to grow plants that have hermaphrodism tendencies.

Sativa Landraces take ages in flower. like 12 weeks So U got about 7-8 weeks left before harvest. it will be worth the wait thou, but there is a reason not many people grow em. Just sit back and chill, she has ages and ages to go yet.