I need some assessment on a situation.

Okay, am I tripping out of my mind? Basically I'm talking to this girl, she's basically my gf now and we only text because she doesn't like talking on the phone. She used to reply very good in the beginning and now that we're official, I notice if I reply not within that second she'll take very long to respond, and always longer then my wait time. My last text, it took her 1 hour to reply. I know what y'all are thinking, I'm acting crazy and she's probably just busy but like I said she replied differently before and when I asked her what she was doing she said getting ready to take a shower, then I asked what "Were" you doing then and she gave me the same exact answer about getting ready for the shower. Call me crazy but I'm beginning to think she's having some egotrip or egospell where she's trying to make me wait long to see if I either text over my text or just to do it. I'm not sexist but I do believe women love their ego rubbed and this is certainly a way to do it but it's making me frustrated. She already doesn't like to talk on the phone which is fine I guess but she's not consistent as she used to be and she's just home, and usually when she's home she'll text just fine because she barely does anything if she is home. I don't get it. Am I missing something here? I'm trying to get an honest assessment on this, no rude comments, they'll get deleted. I just want answers. Am I just being crazy or is there a possibility she is intentionally doing this to feel more desirable or to get the upperhand and make me say something to polish her ego, like "hey were you busy?" I guess if that was her intention it worked because I texted saying she seemed busy, which I shouldn't have done because now I feel like if she is doing it on purpose I just fed into whatever she's trying to do.