What's a grindstone?

Mom says she is going back to the grindstone. I hate the grindstone and I don't even know what it is. All I know is that she is going to be with the grindstone instead of me. It's stupid. Not only that but I heard her talk about her suitcase too and I have an inkling she will be packing again and there won't be room for me.

She doesn't seem to understand when I paw at her keyboard and her face or talk to her when she's on the computer, reading, on the phone, sleeping...pretty much anything that isn't for me, that I need her to love on me.

I had male PMS a couple weeks ago. I was such a bitch and everyone will make fun of me because I have a girl name and say it's only natural that I have PMS. I don't know how Bella tolerates me. I was just outright mean. I have no patience and not only that but I pick fights. I bitched at her for days. I don't know what was wrong with me. She never does anything to make me mad. She comes home every night. She shares her bed with me, she let's me nibble on her food and she lets me know I'm the alpha dog even though I'm littler (I show this by humping her head). She lets me and how do I repay her? I be the psycho mean boy dog. I'm sorry Bella, it was a phase. Maybe a full moon. Maybe I was mad that mom was gone so much. But you're my girl. I love you the most....next to mom.