Ah, the eternal struggle with the spouse's mother. Let me gently suggest that she's probably doing most of these aggravating behaviors unconsciously. She adores her grandchild, can't get enough of her, would love to devour her if possible, and may not even realize how intrusive and "grandchild focused" she is.
Now, that doesn't make it okay, but it's just the way some of us are. I'll bet if a really objective observer were to watch your or my behavior for even a few hours, she'd tell us things about our automatic choices that would startle us. So, I'm suggesting that you take a few deep breaths and try to put some perspective on these annoyances.
If your MIL doesn't like you, and you don't like her, how is anything going to change? Do you have any choice in making things better, and if not, then why would you expect her to? Problems like this are seldom one-sided.
She doesn't invite you, but do you ever invite her? She doesn't talk to you, but do you ever talk to her? Do you seek common ground? Your brain is probably still more youthful and flexible than hers (I'm speaking as a woman in my 60's who is APPALLED at how much my mental functioning and focus has slipped in the past 10 years).
Sounds like you are both engaged in a passive-aggressive power struggle. Unfortunately, it's virtually impossible to "make" other people change, but if you work on your end of it, you might be able to transform this relationship for the better. How much of that might you be able to work with?
I've been doing this kind of work on myself since my 20's, and I know how much sacrifice (of control, of self-interest, of ego) it entails. The good news is that it is so worth it. My sense of humor, my ability to endure obnoxious people, my sense of personal peace, have all grown over my lifetime because I work on them consciously. My son-in-law would tell you this has made me a great MIL, by the way, and you may be one someday, too. Just sayin.'