Chiming in with a bit of repitition.
When I first got Finnegan (my first puppy EVER - only dog growing up was an adult rescue) I was overwhelmed for a good few months. Stress levels were high. He wailed the first week and a half most nights. Many times I just had to place him in his crate and leave the house for an hour or two.
Puppies are tyrannical. :rofl1: They sleep a lot, but when they're awake they are ridiculously energetic and excited to learn about their world. They know next to nothing about how to properly behave in a home and it's up to us to set boundaries and help them define what is good behaviour and what is bad behaviour.
This means a lot of boring training in the beginning - teaching them to potty in the right areas. Teaching them to inhibit their bite. Puppies explore EVERYTHING with their mouths, including skin - this is normal and it's important to teach bite inhibition right away. Teaching them what places they're allowed to jump on, which ones they aren't. Re-directing them to their toy box when they find something to destroy. All that good stuff that will help them be a well-balanced member of your home.
A JRT/chi WILL be high energy. Both of those breeds are high-energy breeds, and will need a good amount of stimulation and exercise daily. This is not a bad thing. It's a wonderful excuse to involve yourself with her! Lots of positive reinforcement, lots of bonding time as you play and learn together. A well-balanced high-energy dog will happily curl up on the couch with you and watch TV if you've given them appropriate energy outlets first.
I have a border collie, one of the smartest, most high-energy breeds out there, and he's always snuggled up on the couch with me... after a nice long walk or a good game of fetch/training/treibball in the backyard.