English Language In Admin With 2 Stores When One Store Is Not English?

Ive just installed 2 storefronts.

Store 1: English

Store 2: German and French

In Admin if I chose (in the top left corner) Store 2, the Admin automatically changes to German but not able to change the admin back to English - only in Store 1 I have English admin.
I want in admin to have English as default language for both stores, even if one store is not set in English in the front end, however I dont want in in the front-end to show English for Store 2.
How this can be set as I cant find a way around this.
Thank you.

Since you cannot set both German and French as default languages for Store2, it's better to use some GeoIP addon to change automatically the display language in all stores according to the user IP.