Hi OP, i’m sorry you’ve had to spend your time working through all the idiotic replies on here from people that simply cannot read or are unable to comprehend what they are reading.
As some have already posted, the whole core of this issue stems from the fact that you are scared to talk to your mum about the issue. You are walking on eggshells whilst your mum allows your child to trash your house. No childminder on the planet should allow this.
Something has to change.
Routine always changes as children get older. Make new arrangements such as after school Club and simply tell your mum you are using after school club so your house is not trashed every school day.
You can’t walk on eggshells around your mum forever, although it already sounds like you have all your life. Make the alternative arrangements so you are in a strong position should your mum throw her toys out of the pram. She needs to know, and once people like your mum hear it and have stomped their feet and cried like a toddler, they usually digest it and get over it, and more importantly, learn.
You can put your foot down and say you haven’t got the Energy to argue about silly things like this and you don’t have the energy anymore to clean up a bomb site after her and your toddler, just like she doesn’t have the energy to keep things tidy like she used to. Sometimes you have to upset people like this who have their own inner child before relations get better.
Your mum needs firing and needs to know why if there is any chance of her bucking up her ideas. i’ve had many an issue with my own mother over the years as she has always been known to be unapproachable, defensive, aggressive and more like a child when she doesn’t get her way. It’s taken a few uncomfortable conversations, but once you break that seal you empower yourself to say it like it is and then you no longer live in fear yourself about her reactions.
If it was annoying you enough to write on here and then have to deal with all the idiots that reply and criticise you, you definitely have it in you to stand up to your mum and get onto an equal playing field when it comes to communication. You are giving her the silent approval to keep doing what she’s doing.
The silence ends now. Good luck.