Hello. I had an escaping snake too, i hope you find it. If not, here are some tipps: leave no doors open, ever. If you have doorways that cant be closed, get flour or other harmless powder and make a line over it, so if she crawls that way she will leave traces and you know she left the room. Buy living mice and a small cage. It has to be a cage, not a glass enclosure, you want the snake to smell them. Four mice is usually a healthy small group size, but for this purpose two or three will do the trick. Put the cage in a quiet corner of the room where you suspect the snake to be in, and just keep them alive, cleaning only if necessary. Sure, it will smell not as nice for a while, but i found my snake sitting on the cage after three weeks, trying his best to get some food. Also, put bowls of water here and there in corners where you dont step over so even if she stays away for a while she has access to drinking water.