Taupin is best known as being Elton John's lyric writer. He is credited as co-writing the 'From The Inside' album. Alice possibly met Bernie while both were recovering from alcoholism.

How did AC get writing with Bernie Taupin on 'From The Inside'?

Not a whole lot to this story. They had been friends for awhile and more importantly-drinking buddies. As Alice tells it, they had talked about working together for a long time but if anything, their drinking also slowed them down. So, when they had sobered up. the time was right. My understanding is that Bernie's contributions on the 'From The Inside' album were minimal, however.
(Renfield, July 1995)