For Cinchi ness... get her saddled, loosely cinch her, just enought so the saddle wont slip. Let her stand tied up for a while. Lunge her, tighten the cinch slow.
Also if someone has made her cinchy by tightening to fast, slowly cinching, and when she show good behavior , scratch and rub her , give a small treat.
As for the bucking anc kicking when you try to mount, lunge her or round pen her, try to mount, when she is naughty make her go around more .