I’m not sure if giving spells are permitted here, however if it violates any guidelines I’m sure the mods will remove it.
But to the spell, so we need things to symbolise her shutting up, if you can purchase a cows or lambs tongue that would be great, if not, you can use the tongue of a shoe or anything that would represent a tongue, if not you can find something that symbolises lips and then get back string and tie it tightly around her tongue, to symbolise her mouth being bound shut every time she thinks to mention her kids and heck, anything else you don’t want her to mention.
If you can’t use any kind of animal’s tongue, you can use a woman figure candle and put a pin over its mouth.
Here are some shut up spells from a very good Arabic witch I follow on YouTube just for inspiration:
Next, you can if you want, use petition paper and write down things in the present tense, like “(name) speaks no more about her children”
“(name) does not think about her children when around me”
“(name) does not send me texts or messages about her children”
“(name) only mentions her children if and when I bring it up in conversation or unless it’s absolutely necessary”
You could also write your name all around the petition to symbolise you dominating the situation.
A skull candle would be good, specifically a purple skull candle to represent controlling her mind, her thoughts and therefore what she does and doesn’t talk about, if this is not doable you can use a normal purple taper candle. Black will work well too with both kinds of candles.
Control oil or shut up oil would be good if you can get that.
Get a disposable foil tray, similar to the one pies come in, but large enough to fit all the contents of your spell.
Put the petition paper in first, with some controlling and shut up oil on it, anoint the candle in controlling and/or shut up oil, and then light it and drop some wax on to the foil so the candle can rest in place without falling over.
Then everything else.
Speak your intentions over the spell with conviction and feel how you would feel, once you’ve achieved your results, but try to behave as if you’ve already got your results and even use things like amethyst to control her mind, lavender, to make her think it was her own idea and gold glitter, to disguise the spell, also causing her to believe this was her own idea, glitter also acts as a way to disguise your working.
Best of luck!