if you ask me then i would think that she does not seem to completely hate the fact that she is being sacrificed..looks a bit like she is jumping on that thing like it is her "free willy". maybe they drugged her really well beforehand and she is like the monsters happy pill...i dunno, but i like the thought. i still like the theme, idea and vibes it gives off.
i can not tell you if it is a good thing or if it is a bad thing (since i am a beginner- level artist myself), but when i look at the painting i see a few places that are focal points. can that be a downside?
also i am thinking you could really hype this one up if you slightly change the perspective. while it certainly is not bad, don't get me wrong here, i think a slightly changed perspective/point of view might improve it by a lot...also there is a monster inside of that very calm water. i mean a giant monster moves through it and it is not making any bigger waves or something? also for a sandy-natural beach the water is a bit unnaturally deep all of a sudden.
still liking the work :) keep making good art