preggo with baby #4! NOT excited to tell my mom

My mom is just one of those people, who doesn't get the love factor, of having children. She adopted me when I was born and it's rare that I've felt the love from her. She also had her own son after she adopted me, that she treats like a king. I understand.. but... she's always telling me that I need to lose weight and that I "don't need anymore kids". But my life goal is to be the best, loving, supportive, mom ever!!! I love my kids more than anything. And it's not like I'm not responsible. I don't party, i work on the post partum unit and my husband and I support ourselves fully. Every time I have told her in the past that I'm pregnant, she's just MEAN about it. There is absolutely not a glimmer of love, she just criticizes me. I try to set boundaries, but she is one of those people that just wants to tear them down. Anyways, I'm dreading telling her we are happily expecting our 4th. Advice? Anyone that has gone through this? Pic for attention