Isnt at also, if storys are at a turning point, Jean left, but she told Kat not to give uo on her man on the moon or whatever, im guessing Alfie finds out about Essex keeping seeing Ronnie, and then Kat realises that, and grows to like Alfie like that again.
I think we could see Jean again as soon as Kat and Alfies, maybe 2nd marriage, as Jean would want to be there