Upload & Sell: On
Forgetting the business side of things and just looking at the photos, I can totally see where she's coming from in wanting more casual / fun photos. There's some good ones in there but I get the sense that it was a bit rushed and they weren't terribly relaxed (the formal stuff doesn't seem natural for them at all). I'm guessing she had different expectations from the shoot and some poor choices on locations or order or amount of time were made (not saying it was your fault or hers) so she's dissatisfied but trying to be nice about it is what I'm getting from that note.
I think you have an opportunity here to blow their socks off by being cool about doing a re-shoot, perhaps even with a nominal extra fee if you feel it necessary, so you can spend more time at that location which is special to them and they regret not shooting at.
You aren't asking for a critique here, but I think these notes are relevant:
On the link you posted, images 3-7 are basically the same. There isn't much of a connection in any of them and it's a bit monotonous (and the blog post I'm assuming is your favorites).
The shots with the columns, particularly the 2nd one don't add anything to the set for me. It's not such a compelling scene that their lack of connection is something easily overlooked, and more importantly in that 2nd photo his dark complexion makes him practically invisible against the dark side of that column.
BUT then on that next photo you're much closer and they're together and I can start to feel the connection between them and it's a pretty photo of them. Then it seems like you quickly walk around them snapping a few shots before saying let's move on before the rain comes.
Anyways, like I said I think you could have another go at it and blow them away if you focus on capturing their connection, maybe stick to more tight shots since there is an apparent tendency to go super wide and that's probably not what she's wanting (you can certainly ask her). She's probably wanting something a little more traditional or conservative in composition and maybe posing while still having your style, if that makes sense.
Hope my random thoughts are helpful.