Vent session.. I am a step mom to two beautiful kids. I've raised them on my own for the past two years with no help…

Vent session.. I am a step mom to two beautiful kids. I've raised them on my own for the past two years with no help from not even their dad my SO. Bio mom is in and out of their life and has the weekends with them when she does decide to show up. I truly feel as though I am the only one that cares about these kids. Well today bio mom came and I opened her car door to load the car seats in and kid cursines (TV dinners) came falling out. I'm talking grocery bags full of them and kool-aid packets. It frustrates me cause I cook healthy food for them all week breakfast, lunch, and dinner. I'm talking veggies and fruit every meal. They come home from mom's with diarrhea and upset stomachs cause she is too lazy to cook.. blah I dont know maybe I'm taking everything out of proportion but it's frustrating to me cause these kids are mine. They may not be blood but I treat and loved them like mine.