Neighbor issues, Need advice! My neighbor & I became friends when we moved in but she's always at my house...

She comes over & stays HOURS. She’s critical of my kids & has started "correcting" them. Her own daughter is an absolute terror. She's 13 & throws tantrums like she's 2 & screams at her mother but she says my kids are bad. Mine are diagnosed ADHD. You can barely walk (no exaggeration) through their house it’s so bad but when my kids had a few things on the floor, she said their rooms were "dirty" & her daughter was "just unorganized," even though the girl has dog feces in her room because she refuses 2 clean. The neighbors car broke down months ago & she depends on me 2 take her everywhere but never offers any $ 4 gas. Usually, she just wants 2 ride when I go. She has the $ to fix her car. I mentioned my boys won’t wear certain types of shirts & she said I should tell them 2 wear it or else. Not 5 minutes later she was laughing about how her girl has stuff with tags still on she refuses 2 wear, bragging, “nothing but the best 4 my baby.” I think she sees my kids as beneath them. Help!