Halloween party vent

I’m having a Halloween party and I invited one of my husbands friends which I don’t really like their low life parents, but to be nice to my hubby I invited them.well I’m asking everyone who is invited if they can bring food or treats. This isn’t a birthday party just something I wanted to do for kids.a lot of my neighbors family and friends are contributing,anyways I asked her if she can bring any food or treat and she declined saying she dosent have any money to help with since she’s saving for her sons birthday party. But they both smoke weed everyday drink alcohol and always eat out. Idk if im being salty or should I actually fell bad for them ?? Like u can make food for a few dollars. Like jello or rice

Update -only reply I told her was no problem and I’ll see you there