my mother never made the slightest effort in getting to know me, and has always treated me like someone else, or the type of person she wanted me to be.
she's incorrigible though, doesn't even realize that she has emotionally abused all her children, and in a few cases caused irreparable damage. many mother insist on ignoring extremely telling behavior, hoping that it will go away on its own and they'll never have to face the fact that their child is a completely different person from herself, who has their own identity and their own need in order to find a happy future.
i agree on not telling until it's necessary. if you do want to tell her though, i'd advice you to only inform her about your choice to transition. do not engage in any kind of discussion about whether or not you're trans or that's a choice or anything. and when you feel it's appropriate for her to start using male name and pronouns when referring to you, just tell her to do that. don't ask her to, that will make it sound like she can ignore you female again. be very clear on how you're not going to discuss your choice in these matters, while being willing to discuss in the form of explaining why you made this choice.
a parent's unwillingness to accept your "choices" of sexual or gender identity can be countered by not accepting any disrespect from them. if they love you, they are responsible for proving this by their actions. if they want to spend time with you, they will have to do that on your terms (unless you live with them).
i'm non-binary though, so i'm having different kinds of issues where i need to be that clear with my mom. but it works. she seems to have realized that i'm my daughter's only parent, and i'm no longer trying to justify any of my choices. it will take time for me to break completely out of the control she's been holding over me, but i'm very close now. i won't talk about being trans before i'm actually on hormones and have started changing physically, simply because i know she won't get it, won't accept it, and will deny the possibility to her last breath if i give her the chance. not worth the trouble.