If every time you saw a certain person they made you work, would you
want to be around them?
You need to mix things up. Sometimes do nothing but groom her after she's been caught. Other times, hand graze her. Then release her back into the pasture.
If you do this, she'll start to associate you with nice things too, instead of just work.
Horses, like humans, don't want to work all
the time, and it seems to me you're doing nothing but
working her when you show up.