No, she isn't off Zeke and Luther.
In Season 3, she is just listed as a "special guest star" in the episodes that she is in.
I'm not sure why though.
Yes, she was.
She is. She plays the part of Zeke's younger sister Ginger.
Ryan Newman
Hannah Montana Good Luck Charlie Zeke and Luther
In an interview from August 2010, Ryan said that she is 4'9". In a tweet from Ryan Newman @ryrynewman from August 7, 2012, she said that she is 5'2".
I don't know why in Season 3 of Zeke and Luther they took Ryan out of the opening credits and now list her as a guest star in the episodes she is in. I asked her why in a tweet but she didn't reply.
Ryan Newman
She acts in the Disney XD show "Zeke and Luther" which is filmed in Torrance, California. Note: There won't be any more episodes of Zeke and Luther after Season 3. There won't be a Season 4.
She was born on April 24, 1998.
Ryan Whitney Newman
On IMDb it says this about Ryan Newman: "A vivacious young actress with spirit, sparkle and an intellect far beyond her years..." Totally! I couldn't say it better myself! Ryan Newman (Zeke and Luther) Is wise for her age, pretty, smart, and a great actress. She is so pretty she doesn't need makeup! Her eyes sparkle and are so pretty!
Well, the character Ginger probably got her clothes from the wardrobe department for Zeke and Luther. The actress who plays Ginger is Ryan Newman. Ryan Newman was asked where she shops for clothes and she replied on twitter: "Well the ones i can actually shop at (not the crazy expensive high-end designers :P lolol) I love Free People& Abercrombie:) "