Does Glimmer do it?

Yes

Still glaring, Glimmer walked closer. She crossed the edge of the magic circle. Catra smirked.

She lay back, and after a second's hesitation Glimmer moved beside her, crouching. Catra hadn't been lying entirely, it was true that some of the short, orange fur that covered her body had gotten tangled. It was hard to avoid it, particularly when nude.

She could groom herself, but it was much more fun to have a naked and embarrassed princess do it for her.

"Well?" Catra said.

Glimmer swallowed. Then she reached in, starting with the soft fur of Catra's abdomen, petting gently. It straightened out easily enough at her touch. Glimmer bit her lip, apparently enjoying the softness even if she didn't like who it was attached to.

After a few seconds, her hands moved on. She stroked Catra's sides, then moved higher, palming the cat-like warrior's breasts. The fur there was softer still, and paler around her nipples. Speaking of reluctantly enjoying it, Catra started to squirm a little.

It had just been meant to be a way to annoy the princess. Instead she felt her body reacting. Judging by how Glimmer's breath quickened, she wasn't the only one.

Soon her fur had been groomed, straightened out, on her top half at least. Glimmer glanced down to Catra's bare, furred legs. She swallowed, throat dry.

"Is that all?" Glimmer said. Her voice was shaky.

Catra ached. She wasn't sure whether or not to push things. She was meant to be making things awkward for the princess, but if she kept on she was sure she'd be the one getting embarrassed.