AITA for not wanting to share baby supplies with my friends former SIL and her babies that she had while they were together and now she’s single?

So my friends ex husband cheated on her and got the woman he cheated on her with pregnant with twins. She found out and divorced him. He got a paternity test to confirm that the twins were his and now he’s moved in with this woman. This was very painful for my friend and it was hard for her to see them as the woman gave birth and started bringing them around my friend and the kid she shares with him. The babies are now a few months old and the ex husband and his new baby mama are buying double strollers and car seats and all that jazz. <br><br>Well they broke up and the guy is moving back in with my friend and their child. The new baby mama is distraught and the guy said he’s done with her. I’m just happy my friend is getting her husband back but the woman is being stupid and saying she needs supplies for the twins and my friend should give her stuff because she doesn’t need it and only has one child. <br><br>She asked me but I said no I don’t think I’m comfortable with that. She’s lashing out at me saying I’m being petty and her kids need stuff. I’m thinking AITA for not wanting to give her supplies and stuff for he kids she had with my friends husband while they were still together?