She (he?) does indeed look to be at a decent weight. We had a group of 45 gram girls come into our rescue and they took awhile to put on weight but are now on their way to being lil fatties (5 months old - 155 grams). As long as the skin isn't folding and no vertebrae are visible, I'd say you're okay. Maybe feed every 5 days instead of every 7? Our little girls were being fed every 3 days for the first few weeks after they discovered food (granted, they were on fuzzies).