She was bred from this year apparently, I will upload some pictures of some of those babies i think he sent me some.
as for underweight i feel she is slightly just for her age as she is 2016 and around 1200 grams its more she needs to gain weight back from last breeding than "skinny" she was out of the group the healthiest
she does look like something is different with her, il get some better pictures once she starts eating and looks a bit better as currently she is still refusing food. il add pics below..