Hi would really appreciate any feedback on this situation.
Dd is in year 12 and just turned 17 didn't come home last night. She has just got in now.
We are pretty relaxed with her regarding going out she goes in Manchester with her friends gets in at 3 ish. She doesn't have a curfew because up til recently she hasn't needed one and she's 17.
I woke up at 3.45 and she wasn't back so I text her and she responded that she was sorry forgot to phone me she was staying at a friends they got in at 12 (unheard of and she didn't go out til 9) and she has fell asleep. Didn't believe her, snap chat maps had been turned off and she wouldn't answer my call and told me she would be back by 6. 
I'm really pissed of with her. This combined with a bad attitude, rudeness l and a total lack of respect for me lately has really annoyed me. I've been awake since 3.45 and have 3 younger children to deal with alone today as dh is away.
My mum lives round the corner and has said eldest can stay with her for a few days to give us a bit of space.
Am I being hard work? Should I just be letting her do her own thing?
I feel like coming in at 7am is a step too far.
Any wise words form those who've done the older teen thing?