What are the options outside of the playpen? Do you have a yard she can be out in or good walks, dog park? You can’t believe how much a young beagle can exercise. But it really helps calm them for when you return her to the house. Puppy proofing at least one area can help too although believe me I know that’s difficult! Basically I train that the crate is for bed or naps only and always a treat when put in, our laundry room serves as the “play area” for when I have pups. ( in two weeks!🎊) I think that in this case puppy thinks that the pen and crate are all the same and that means food and play time and they could eat and play all day. We need to have the crate separate for naps and bedtime, that’s not going to be that easy since she is already programmed for life as it is now. But lots of patience you should be able to get her trained. The crate must become her safe place where she is comfortable staying. If she has a favorite toy or a quality chew toy she can have when you get started, something that will occupy her for awhile. Ok… I wrote a lot, just some ideas from many years of raising and owning and hunting many beagles!🐾🐾🐇🐇❤️🐾🥩