Backcountry could mean small and light, or rugged and durable.
If you want a back country system camera, I would highly recommend something weather proof and rugged like the Sony A6500+, Olympus E-M1 , and E-M5 series (any version). Sony added in body stabilization and weather sealing to that version. But I’d still rather have the Olympus for lens options. Much broader selection.
If you want something that’s simpler, all in one, then there is no better choice IMHO than the RX100 VI or the RX10 IV. The RX100 VI is a pocketable, sharp (sharper than the sub A6000 sized zoom lenses, all of which I’ve owned) 24-200mm thing about as big as a deck of cards. It isn’t waterproof but it is surprisingly durable. The 10 IV is bigger, but still manageable for wild life. It is a system camera replacement. Its 24-600mm (600mm is where wildlife photography begins) and also sharp at 600mm.
For beginners, outdoor photography, I like the RX series - would rather own a couple of these for various conditions than an A6000 and some of their less durable APSC lenses.
There are advantages to both. The RX is small and will fit into your pocket. The 1" sensor makes it better then most point and shoots but the crop sensor being 3x larger will yield better images.
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There is no better camera setup for all weather photography under $1000 then Olympus. The E-M5 with the 14-150 lens are both all weather. Sony is a great option, but like every other crop sensor camera, while some bodies are weatherproof, the crop sensor lenses are not. No help at all. If you go with Sony's full frame lenses then you have a big crop factor and a lot of $$
The Olympus, right now, would be $929.99 with a case and 32 gig rugged card.
I am a newbie when it comes to videography and photography but after picking up the canon sl2 last year I have been very impressed I like how it has auto focus and a foldable screen to video different angles. Definitely would check it out for your daughter I believe they even came out with a canon sl3 but I think the only difference is that the sl3 shoots in 4K and the sl2 shoots in 1080p so you may be able to purchase the sl2 for cheaper you should be able to find the sl2 for around $400 now a days. In my opinion I really believe that when it comes to hunting videos 4K and 1080p really don't matter.