am i overreacting?

Should i confront her about it? I’m 19F and i’ve been talking to this woman 21F. I wouldn’t say we are in a relationship kind of? We are at that weird stage. We are also long distance Texas/NJ. We talk about a future together and honestly i don’t take it to serious since we haven’t been talking long honestly i would say about 2 weeks. And now that i think about it, it does sound kind of insane, Anyways shes a preschool teacher and im in DEP call for the airforce. She worked usually Monday-Friday and im gotten a good understanding of her schedule. Anyways at around 4pm i got a group call with her and her friend, which was weird because usually she’s home around 5 and i mentioned “I thought you were still at work” She didn’t reply and moved on to another convo. Now later in the day, Her mother comes into to help her register for the second semester of college and as she’s doing that i hear her say “i don’t know why you didn’t go up there and do it you didn’t go to work today” so im thrown at a full 180. And i don’t know if im overreacting but earlier in said day i did text her asking how was work and it took her awhile because in her words “They are understaffed and she’s been so busy”. It’s just so weird, why lie over something so small? i hate when people lie to me cause it makes me spiral into thinking everything was a lie. Should i confront her? Should i not say anything? Am i just overreacting? Should i just stop talking to her? I don’t know what do to.