If she is stuck and cannot get out the only thing you can do is get some help moving anything around that area of cabinets so you can get behind. I really think she must be stuck because even if they are not hungry they will always gravitate towards water plus if she messes herself she will be more miserable. My son-in-law is an exterminator and gets calls like "A racoon went down my chimney, can you get him out" and they do that too, it is worth a phone call. Also animal rescue in your town might be able to help.
When you do get her out, make sure you block the area she went into in the first place or she will do it again.
Hope all turns out well.
Carolyn