Hm, I really didn´t like Cheryl in the beginning but she grow a bit in the end. Liked her Grandpa comments and Brocks "what a man" comment.
Even if she is going to stay a few eps I don´t think she is the "right" fourth member of the group (long time member). But for a few eps she can be ok I guess.
Some funny moments so I give the episode 6/10 overall.
We say goodbye in the pouring rain
And I break down as you walk away.
'Cause all my life I felt this way
But I could never find the words to say
~ Stay by Hurts