Do I have a right to be upset?

So I'm 17,and 18 in November and my cousin just turned 21 and we found out today that she's 5 months pregnant with a baby boy! 2 years ago we all fell out of contact when she got upset because our nan had a boyfriend. My pop died 3 years before that and she was lonely and why not you know? To be a decent human being I messaged her and told her congratulations and she read it and no reply.. It really upsets me because I'm trying to be the better person here and be nice and she has no reply?

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