we are not on the same schedule

I call my friend Linda at nine a.m. she is probably sleeping I leave her a couple of messages get no reply she calls me around ten pm this wakes me up and irritates me I do not answer, not wanting to encourage her to call me this late we are not on the same schedule I doubt we ever will be I cannot imagine sleeping past eight=thirty in the morning I am usually up at six She begins partying at ten p.m. several hours after I turn my phone off for the night