Hi Jennifer,
I definitely agree with Roy. I think your little garter isn't currently interested in pinks. Try offering worms or fish. The first goal is to find a scent that is irresistable and gets the garter eating again. Then you can get it back on rodents, if you choose to. Sometimes it makes a big difference if you offer live fish in shallow water, so that their back/fins disturb the water's surface when they swim. The smell and motion is often more than a garter can resist
. Keep us posted, okay?
Rick