I feel bad that this even happened and I couldn't find anything related in the search.

Today I was letting Matt swim in the sink like I sometimes do and she decided to go into the top drain (not the real drain which I always close, but the one at the top for when the water gets too high..never thought about it so it wasn't closed).

I knew if she went fully into it she would be lost forever and probably die so I acted quickly and grabbed her at once...she was about three inches (seven cm) into it. Once she was in it was very hard to pull her out though. She's very stubborn and it took some force. I tried to be careful.

I don't think she was injured. Some flakes of something started coming out when I finally got her to budge and I thought maybe it was parts of her scales, but now think it was probably just dirt and grime from the drain. I've examined her and blotted her repeatedly with a paper towel and there's no blood or breakage in her skin.

Any advice at all in regards to this matter? How to make sure she's OK (she has been moving around normally and seems to be the same) or anything else...like if there's an easy fix to make the snake let go when they get into an area that you don't want them to go. Anytime she latches onto something it always seems to be an ordeal to bring her back to safety, though nothing as scary as this time.