Presuming they are climate appropriate for where you are (can't tell, nothing says where you are), how about Renae or Annie Laurie McDowell. Both are lovely pink, healthy, ever flowering, nicely fragrant and THORNLESS. Kim Here is a link that might be useful: Annie Laurie McDowell

Gravetye Beauty is the only one on your list that I have and it, along with Princess Dianna and Etoile Rose, can be mildew magnets in my garden. Using a Neem based fungicide has helped with the issue this summer however. Gravetye Beauty in my garden is more of a burgundy colored clematis to my eyes anyway. For reddish colored clematis that do well in my garden, I would recommend either Madame Julia Correvon, Kermesina or even Avant Garde. If you can get a good red clone of the texensis I have, I would also recommend it. Texensis Avant Garde Madame Julia Correvon A collage of various reddish clematis from left to right are Abundance, Kermesina and Madame Julia Correvon.

You might tell her to try something like Altissimo, a beautiful, single (5 petals) red rose, or maybe Climbing Pinkie, which is a little larger and should also be okay in your climate. Pinkie has clusters of small pink fully-petaled flowers and is probably the more disease-resistant of the two. But, be aware, no rose is going to be disease-resistant or flower well with less than 5 or 6 hours of direct sunlight a day.

I am going to suggest pink Don Juan, it has big, beautiful rich pink blooms that smell wonderful and has been very healthy in my hot and humid Texas climate. I got mine from Chamblees last spring. It bloomed all summer and the blooms stayed vibrant in the heat, it also can handle a little bit of shade as mine stops getting direct sun around 3 pm.