Mom keeps hounding me about getting my license

I’ve been working on getting it(I’m 28 btw) and my mom keeps hounding me about taking the test. I’m moving to be with my fiancé afterwards.

I scheduled the test twice but first time I didn’t feel ready(basically did it so she’d stop nagging me) and second time my instructor felt I wasn’t ready.

I’m supposed to take it this weekend but I don’t feel ready at all. I just want to reschedule. Next test I can take is the in two weeks and I think I’ll be ready by then.

I don’t know what to do.

I tried to gauge how she’d feel about me not taking it, so when she asked how I felt about my driving I was truthful said I didn’t feel ready. She basically got pissed off and said that I should not even bother taking my test then and just move ASAP with my fiancé because I’ve already rescheduled it twice.

Any advice?