Personally, I would not have done that at all. Her mess is HER mess to clean up, not yours. I would 100% let my kids stay at my place while she sorts out her dumpster fire emergency BS, but I would not have helped her move. You can protect your kid and NOT help her, it's completely possible.
But that's just my opinion, and I realize I'm a little bit on the aggressive side when it comes to NC. My first instinct is that she was temp checking the hell out of you and trying to manipulate you.
Good job keeping it business only though.
Save yourself. Nobody is coming! BD:11/2017 Filed:12/2017 Final: 2/2018