Angela
Sheldon fumbled and stumbled his way into the newtons cradle interiors. There was frankly quite a bit to get invested in here, there seemed to a room for every activity, a nook for every hobby, and a cranny for every scenario. 

He stomped around, leaving gelatinous footsteps as he hobbled around the halls, trying to find somewhere to go. His neck stretched out, peeking through the windows, trying to parse out any passer-by's. It would naturally be a little unnerving to see this towering slime humanoid with insane strands of constantly flowing hair just waltzing about, either that or the people here saw slimy oddities twice a week!

"Geezaloo... This place has got rooms than my entire brainscape... Although then again it doesn't take much to outpace my brain..." He talks to himself, in a distinctly warmly tone of voice, a byproduct of the slime adapting his vocal cords.
Stefanie
Naturally, when Tiffany sees gooey footprints, she's gonna follow them. She has no idea what caused them, and she wants to. Is this another mystery? She loves mysteries! She's just really bad at them! 

She also stomps around, but when Tiff does it it's different, because she is large.

She follows the trail like a dog following a scent when..

"Aha! I found you!" She points at Sheldon, grinning. "You left a *Mess,* Dude."
Angela
Sheldon's hair wriggled in surprise upon being yelled at from the other end, as his neck twisted like an owl to see who called out to him. He looked down at the slime crumb trail, a little embarrassed.

"Oh! Uuuuuh, yeah sorry about that! I tend to forget this stuff can just... Drip off like that. Aw man, the janitors must hate me... Does this place have janitors? Are there like, shapeshifting janitors that turn into buckets and dustpans that clean this place up? Nah... That's too whimsical..." He realised he was rambling a bit to himself, rather than greeting the lady across the hall. He bumbled over, still a little unaware of the slime he was dripping.

"Oh right, uhhh, I haven't met you yet! The name's Sheldon. Don't mind this form, it's kinda my whole shtick." He takes a deep breath, and deforms back to a shorter, normal fellow, although the slimy stringy hair on top still remained, offering a hand for Tiff to shake.