Join Date: May 2012
Location: CT USA an English transplant
I think it unlikely that the boarding yard will accept her if she has a coloured nasal discharge so you need to get it cleared up
Its possible that she has an allergic reaction to dust and pollens in the hay - horses have to push into a round bale to eat so that can make it worse
I would feel happier if you got a vet involved as she could have an infection that is getting worse all the time and will eventually cause breathing problems but in the meantime you should try pulling out some hay for her - as much as you feel she eats, soak it really well in a tub of water, drain and feed, preferably loose on the floor - get a piece of rubber matting to spread it on if you keep her on dirt or sand
If you don't know when she was ever wormed and you don't want to get a vet involved for a fecal egg count you should do her with a correct dose using a wormer that covers most internal parasites, make a note of the active ingredient in it and then do her again in 3 months time using a wormer with a different active.