TLDR: My girlfriend's son is picking up horrible habits and it is weaponizing seeing her to get his way.

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Me and my Gf of the last 7 months went to a local carnival where we live. It is her weekend to have her son. Her son is 4 and is a little firecracker. She does the best she can for him always giving him the most. He doesn't live with us and his dad's family unhealthily spoil him. Usually on the first day of her weekends of getting him he is hell bent, creating chaos.

He shows no/little interest in me as well. I'm okay with that since it's still early in the relationship between me and her but it still kind of hurts.

Anyhow, back to the carnival, it was time to go home, and he began to pitch a fit. Thats when he told his mom (GF) that he hates going to her house and he isn't coming back. That broke her heart man. His grandmother (her mom) and I tried to tell him that was wrong, and he just acted like he didn't care.

Grandmother then said she was going to take his toys when he quickly and meaningfully said, "I'll just have Nanny Una buy me more."

Part of me wants to believe he is just mad that it was time to go, but the other side is telling me that he meant those words. What should she do? I absolutely hate that it all went down like that. She is an absolute great mother. She came from a very rough start and has worked hard to get the things to provide for him. She loves him with everything in her. I've seen her cry so many times over missing him.

Is there anything I can do to help her?

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