In-Law Stress

So, I'm getting a little annoyed with my mil. She lives close and sees my 5 week old daughter at least once a week, often more like 2-3. But she's CONSTANTLY complaining that she doesn't see her enough. She says my daughter is changing so much and she's missing it. This weekend we were at a Halloween church event and I let her hold my daughter and she ended up holding her during the entire event, telling people all about her, not acknowledging me or my husband as her parents at all, etc. I was annoyed, but hopeful that would keep her happy for a little while, but nope, the very next day she was complaining about never seeing her all over again. I'm really struggling with it because my family lives really far away and my parents haven't even met my baby yet, so it kinda feels like a slap in the face that she's not happy with the time we give her, when my family gets no time at all. I just don't know what else to do. I'm very independent and I really like my space, and my husband's back at work, so when he's home I'd rather it just be the 3 of us than spend time with his family. I thought I was being nice by making sure she at least gets once a week, but it just feels like nothing is good enough for her. Does anyone have any suggestions that might make her happy without overwhelming me? I'm at the end of my rope!