I liked the whale better too and the monitor lizard reminds too much of Joliette who's a komodo dragon.

you don't need to post the stats of her friends or family lol as they're not going to the island and frankly we don't need to know their likes or dislikes or anything else about them in detail. You can touch on them in your history but it confuses the reader as at first I thought they were other ideas of yours.

Silver isn't really a true hair colour unless she dyed it or she's prematurally going grey (not very likely) XD. It also strikes too closely to the anime genra where kids somehow have silver/white hair and you want to stay faar away from that.