Thanks for all the suggestions.
I decide to go roughly 50:50 Fighter/Cleric, I'm keep meaning to note down what options I picked. Will try to remember to do so next time, we don't play often (like once a week usually), and only for a couple of hours each time, so we tend to focus on progressing our mayhem. Anyway, whilst she's not the strongest healer, being able to have her fight alongside my Barbarian/Rogue/Fighter, and still be able to support when needed, is really working well. Though it does mean I have to monitoring how my friends are doing.
Oh, and I'm kitting her out with Radiant Orb/Reverberation kit.
Anyway, I will make a post with what chooses I made at some point.
