Wow, yeah, she looks like she needs some groceries! Small mice are waaaay too small for her, especially being only one every other week. She should be fed 10-15% of her body weight every 5-7 days. Rats would be better. I would probably start her off on a 7 day schedule feeding appropriate sized prey and after a couple feedings when her body gets used to having more food I would bump her up to a 5 day schedule until she puts on some good weight and catches up.

To give you an idea on how small she is, you said she was 194g and about a year old. Our female balls usually range between 800 and 1,200g by their first birthday and our males, are usually at least 500g.