It's been six months that I have been manually feeding this girl and she is still hanging in there. She sure is skinny, though. I'm not sure she will make it through her next moult, but I am not giving up on her.
She lost her fangs in her last moult - she never had them at all coming out of her last moult. She did not break them before they hardened.
I have tried doing the bug soup and it just wasn't working. Manually feeding her with a syringe every few days is the most successful thing I have done and I have done it all - bug soup, cut open horn worms and silk worms, cut open crickets, and even mouse gut soup. Feeding her with a syringe was a last resort, due to her small size, but it has been the most successful.