Am I overreacting? In your OWN opinion?

Rang my girlfriend to be nice to ask her how she is and how her day is going her son (13) answered said she's in the shop and he'll let her know that I rang... anyways 3 hours later she texts me whats wrong im really quiet today

I said sure I rang you earlier and James said he's let you know I rang and she said well obviously he forgot and I was like yeah I didn't say he did it on purpose- then she said its not the end of the world and no big deal and I got annoyed do I have any right to be?

Just i feel its lie straight up defence for her son in my eyes

Am I overreacting? In your OWN opinion?
Am I overreacting? In your OWN opinion?
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