[The problem is, that doesn't make this situation any less awkward. It merely makes it a different kind of awkward, and one that makes her feel a pang of guilt. After all, he had said he was proud of his body, and based on the way he's acting, she's sensing that his pride is wounded.]

[She turns, preparing to pull off the robe... and then thinks of a way to possibly explain herself.]

It's just... this was supposed to be somewhere that we can relax and soak, isn't it? There's no places to sit and stretch out — and sitting there at the side doesn't look terribly relaxing. And you can hardly submerge, or soak your arms and back. And...

[Hm. Should she call out the scar, and how painful it looks? Maybe she should play it safe.] And your muscles probably need the rest and relaxation, don't they?