We bought these on sale from Amazon but here is a link :D
Copic Premium Artist Markers - 72 color Set A - Intermediate Level https://www.amazon.com/dp/B000MRR41E/ref=cm_sw_r_cp_apap_gOdF5P7MYVgUZCopic Copic I72B Ciao Markers Set B, 72-Piece https://www.amazon.com/dp/B000MRWHBQ/ref=cm_sw_r_cp_apap_RjVunsBxy2X7u
If you want to see more of her art using those markers she has recently posting a lot of videos with them!
If she's just starting out, the ciaos would be great for her. Depending on how much you're willing to spend, they come in sets of 12-72, or you can purchase them separately as well. They are refillable and have replaceable nibs and the same nibs as the sketch,they're just a little cheaper because they hold less ink and come in less colors. Even if she becomes a professional artist, she'll still be able to use these and weave sketch ones into her set.
I've had great luck with this particular hammermill paper. It's basically bulk cardstock, just a little thinner. Doesn't bleed or soak up too much marker. Alternatively, get card stock. Little pricier and won't make that much of a difference though.