She is the one to initiate for next date but replying really slow

Her - we should plan something
Me - yes we should. What days are you off next week (for this week)?
After 3 days
Her - i’m off tues and fridays mostly
Me - cool. How’s next friday for you?
After 2 days
Her - i might be working next friday but let me confirm
Me - cool. Lmk. If not we can also aim for wed
After 3 days
Her - none of those days work :(((
Me - what days work for you next week?
Its been 3 days. No reply

Would you call out this slow text behaviour? “At this rate we’ll meet next year”
Or is this passive aggressive?