Me, CF (25) female. Not sure I want to continue friendship w/mom friend (28)F.

My friend and I have been friends since we were teenagers and we have been through a lot together. We have been through breakups, college, family drama and tradgedies. Shes practically family: she dated my brother for 6 years and they have a kid together (no longer together). There was time in my life where I drew a lot of comfort from this friendship. But, these days...I just am not feeling it anymore.

It's not just because she's a mom. Her son (my nephew) I adore, he's a sweet kid. He's 4 now. It's just that everytime we hang out, it's always WITH her son. Which, you know, I don't mind hanging around with him every now and then. He's a part of her life, and MINE. But, that's all we do, really. And when he's there, she's constantly in mom mode: trying to redirect him, calm him down, make sure hes entertained. On the rare occasions that we spend time together alone, we don't really have much to talk about (she does however makes it a point to go out for actually fun nights with other female friends of hers. I get the kid and the boring stuff). I feel like we've been having the same conversation for the past two years. She talks about her son, her family and her boyfriend, maybe bitches about work, I do some of the same. But I feel like when I try to deviate the conversation from those topics she gets bored, distracted...eyes glazed over. Is always checking her phone. We don't really do anything anymore and we don't really have anything in common anymore.

A mutual friend (one of my BEST friends) came home for the summer from France where he's been living for the past 4-5 years. He rarely comes home, maybe once a year, if that. So we decided to hang out. She had tentative plans to meet up with her boyfriend that night, but they were just that...tentative. I hadn't seen our friend in a year and a half and she hadn't seen him in longer. We were together all of 45 minutes before she insisted she had to go see her boyfriend. I begged her to hang out since our friend is never in town and she hasn't seen him forever, but she was insanely concerned about dissapointing her boyfriend. So we drove an hour to her boyfriends house only for her to decide to stay there. I was pissed and we haven't hung out since.

WE did talk about it through text later and I was pretty blunt how pissed I was. Bottom line, I'm not getting much out of this friendship anymore and I don't feel connected or close to her anymore. She's been texting me lately "I know I'm a shitty friend" and "lets hang out" but I know it'l just be the same old thing. I don't hate her, I don't even know if dislike her, I just don't feel like putting effort into this friendship anymore since I'm not getting much out of it. I don't want to hurt her, I don't want to necessarily cut her out of my life, I just....want to fade away. She's not really letting me do that. Help?