[Just as soon as she starts to really pull up Momo's shirt, she stops - stopped in her tracks by her friend requesting the same from herself.
She ends up sitting back a bit, looking down at her shirt - just a lazy camisole she tossed on for ease's sake - before looking up at Momo again...

And her face starts to flush, getting that comically wobbly look that she's quick to hide behind a paw. It definitely gives her the classic sneaky fox spirit look, despite the reasons behind it...]

... I don't mind that, but I, uh...
I'll need help with mine. Taking yours off with my jacks won't be too hard, but it'd be a little hard to maneuver for my own...

[Nope, that's a bald-faced lie. Jiro? Having trouble maneuvering her jacks? That's laughable.
She just wants Momo to do it for her, and isn't trying too hard to hide that fact.]