Riding or not?

I am faced with quite interesting question - riding or not? The trainer who worked with Paikhas thinks that she might be getting sour and I should give her a break or take her for a trail ride since she is only a 4 year old.
The day before yesterday Jessica and Todd were coming so I wanted my horse to at least show the left overs of training before she got all bucky-and-kicky. I took her out at 7am and rode her in the exercise ring then took her on a mini ride out of property. Then I tried to ride her out in the farm and got stuck, she would just fight with me. Then I moved her in another pasture and tried riding her and she did some... By then I was exausted more mentally than phisically.
When guests came I was determined to ride Tiki my best. Cesar was leaviing in the morning and saw me fight with her. When I started putting saddle on her later on he asked if I want to ride her again. I said Yes!
I went into the ring strong and determined and guess What? Tiki did everything I asked her to do - walk, trout and caneter and she wasn`t perfect as Kate say she was 80 out 100 but she was working. I got stuck only once and jee... what a happy ride it was. Today she had off and hanged in the pasture...
Ride or not to ride? Ride for sure.