small community theater chaos- getting a lead role because no one else auditioned?

i was at my community theaters costume room after performing in a show i'm in right now, but next to the costume room auditions for another show were being held. i had to walk through there to put papers on one of the theater staffs desk (yes this was okay, yes they are used to it, they knew a show was going on in the theater below). i went back into the costume room and was waiting for my mom to come pick me up, and the director of the show in the next room comes in and starts kind of hinting she wants me to audition, asking me if i was, etc. she leaves and i am still waiting for my mom and then COMES BACK IN after my mom had just arrived and asks me to audition/read a couple sides. i say sure because i didn't really know how to say no, and they seem to be desperate since there were no other girls there to audition, and there had been an emergency casting call posted earlier for the auditions that were currently happening (likely due to a lack of people coming to the first audition sadly). it seems like i was the only one who auditioned for the lead girls role. before while the director was talking to me, she asked me if i was auditioning and i said i was thinking about it but i am 17 but the character is 20s-30s and the director said she could just age me up and the characters age isn't thatt important. anyways i ended up deciding to fill out an audition form so they had my info in case they were truly desperate for someone to play this role. i seemed uninterested because the ast director asked if i was auditioning because i wanted to be in the show or just to audition and i just told her i dont know anything about the rehearsal schedule yet so i'm not sure, but now i dont want to get my hopes up because i kind of want the role!! they said the rehearsals would start later this week, and i have no idea when theyre going to send out a cast list or if i will recieve one (unfortunately this theater just decides to not email people if they werent cast sometimes). i have never done a play but i have been wanting to for the past few months! soo now i have no idea if i will get this role or not, theatre is weird in the way that you'll be confident you get a role but somehow manage to not get it. i've also never gotten a lead before and it would be embarrassing if the first lead i get is because no one else auditioned...