Issues with my mom

I’m 30 years old and my parents divorced about 2 years ago. Neither parent was perfect but my mom had an affair. We’ve had a strained relationship since. She’s been on/off with the man she left my dad for. Recently, they’re “not together” but still talking and my mom has chosen to start dating other people while keeping this other man around. And when I say date, I mean I can’t even keep up with the number of men she’s gone out with recently.

My issue? I live 1.5 hours away and the last time she was out here to visit and help me get ready for the baby, she spent more time on her phone than a teenage girl. To top it off, she also met some man for a date while out here visiting!! So here we are again this weekend, she just got here and she spent 1.5 hours out in her car on the phone. She’s so secretive about it but yet brags about all the attention.

I don’t know if I’m being overly sensitive and hormonal but she’s supposed to be here to spend time with me and help my husband and I get prepared for the arrival of our first child. I don’t ask her to drive out here to help, she offers but I feel like we’re not a priority while she’s here. I’m getting so annoyed and angry, I just don’t know how to approach it.

She’s wanting to stay with us for a week or so when the baby is born but at this point, I feel like it would be useless if she’s just going to be on her phone the whole time with all these men!! She’s just become this person I don’t even know anymore.

Advice??