They don't, but Ruth says nothing to the smile. Hers, on the other hand, is very much genuine, if slightly hesitant and definitely timid, the shock from before bleeding from her expression to be replaced by a faint fluster that colors her cheeks.

"This, the... feelings, just feelings. I didn't know... I mean, I've liked you for months now, I didn't think you... did, too. Liked me, I mean." Her smile turns a little apologetic, eyebrows lifting slightly as she tries to get Betty to look at her, reaches a hand out tentatively to hold one of hers. Hopes that's enough to drive away the trace of worry and apathy from her features and stance. "It's not a bad thing. It just means I'm completely clueless."