Your dilemna made me think of a time my dad was living in a cabin behind our house and his health was declining. I kept asking him to move in with us and every time, there were reasons to wait a few more weeks, it's too hot out today, I'm too busy, etc. This went on for months...maybe even a year? I can't remember exactly but it went on for a long time.
Finally, my BPD ex-wife (who I didn't realize had BPD at the time) said to my dad in a stern voice, "<Name>, you're moving in with us this weekend. I'll be over tonight to pack your stuff and we're getting this done now. You're not living alone any longer."
My dad sort of stared at her for a moment and said, "Yeah, okay."
I thought, "What the heck?!?" But that's how my mom always talked to my dad when he was hesitant, she'd just tell him how it was and he'd comply. And I realized that the actual problem was giving my dad options to decide on his own. He was getting a little senile, his vision was fading, he barely cooked for himself, and I was beating around the bush like he should have had the final say.
I shared that little story to say this- tell your mom you're doing the carpet this weekend, it's already been arranged, and it will cost more money to cancel than just letting them finish the job. That let's her get past her indecision because it's no longer an option- it's happening regardless.
Maybe she gets mad at you, but she can be mad while enjoying new carpet and that gets it off your to-do list.



but horror is my favorite genre. Sadly it was my exes too, I miss going with her to revery new movie and both being excited about it. Oh well, at least I took that part of my life back for me. 