You could try Whirley or Swirly it has nothing to do with softball but if she's weird it will really work for her.
A good softball nickname for a girl named Emmalee: Emma; Lee; Em
Belly!
bertha, big T, smalls, etc. you just have to find a characteristic about that person and give them a nickname.
'the runs'
dumb brunette
nates natey
pepper
Abowlo
emmerlina
funny amendment
There're aren't many funny nicknames for Christine but these are some:ChristyChrissyChrisCri Cri ( this one is kinda funny )Tina