Others have also reported chicks getting hung up in the wires...I guess in an attempt to get as close to the pad as possible. I have never had that happen, but just in case I modified mine a couple of days ago the the way @Beekissed does hers and boy, is it ever easy to do! I love Press 'n Seal, but early on in the thread we discussed the possibility of the adhesive adhering to the pad when put directly on it. So I just put it on the top of the towel. Never thought about it sticking to the chicks, but since they only have it on top of the towel and there's no ends of it loose anywhere, it's been a non-issue for me.
Here is a link the page with information on how Bee does it.
https://www.backyardchickens.com/t/956958/mama-heating-pad-in-the-brooder-picture-heavy-update/450
Pasty butt is a pain in the butt, no two ways about it. It may take her a little bit to start pooping normally after cleaning, but at least she got some out rather than being totally blocked and possibly dying a miserable death. Couldn't hazard a guess as to the distressed cheeping, unless she got a chill after being wet. Maybe a bit of a tummy ache if she'd been blocked up too, I don't know. Just make sure she stays warm. Shove her under there if you have to. (Tuff love) If she's pretty runty she may be struggling just to survive, and with chicks, whether raised under a lamp or MHP there are never any guarantees. Some just don't thrive.
I haven't had any PB since starting with MHP......wait, that's a lie. I had two chicks with it when I first got them and before I put them out I cleaned them and put a dab of olive oil on them. Had to clean it off the same two chicks a second time, but no repeat performances after that. I guess that's not bad out of 33 chicks. With my first batch of chicks, lamp raised, I battled it with them constantly! I repeat what I've said before - I have absolutely NO scientific proof that MHP prevents Pasty Butt. But overheating, overeating, and lack of true sleep must play some kind of role or broody raised chicks would suffer from it as much as brooder raised chicks, and it just doesn't seem to happen.