During the episode "Skooma Face," S'oggy Balls is trying to get as much Skooma as he can, due to a plague in Elsweyr. Shitty Angie is the last known drug dealer in Skyrim, behind Sprinkles, Tim Horton, Tim Horton, and Tim Horton. S'oggy buys all 137 Skooma that she had and leaves. Angie then went back under the waterfall and has yet to appear in any other episode in the series since, but was mentioned in Season 6.
"What's next?" "Markarth."
"Who's in Markarth?" "Shitty Angie."
"Shitty Angie?!?" "Yeah, well, she's a drug dealer."
"Does she like being called Shitty Angie?" "Well, she knows she's shitty."