It depends who you want to shoot mrsmugoo, your husband or yourself?
DS had just woken so has gone 7.5-8 hours which is a million times better than I though!
johull - When DS was younger he would typically fall asleep at the breast, I think that's very usual for babies at 6 weeks. It may be that your DC is suckling for so long because they're trying to stimulate your milk production as due to you giving bottles your milk supply may be a little lower. Are you expressing at all during the night? I think night feeding is considered to be very important in terms of the supply and demand feeding (though can't remember why) so if you are giving formula overnight maybe you could express at some point to make up for this? Do you have a partner who could give the bottle whilst you express? Or have I misunderstood and it is breast milk she is having?
Now DS is older he just takes himself off the breast whe he is done. As they get older it's much easier to assess when "they're done" as they will let you know themselves by detaching themselves and seeming content afterwards. If DS still seems a little fractious after finishing on one breast I offer the other one and if he wants it he will take it. Up until DS was about 8ish weeks my nipples were always sore and tender which I put down to breast feeding being something new and the frequency of which DS was feeding. Have you got any Lasinoh nipple cream?? It was my saviour!! I was absolutely slathering it on every few hours, all over my nipples and areolas, it was a life line. It isn't cheap but well worth it if you haven't already got some.
I had a C-section so found it very difficult in the first 24 hours to have a lot of contact with DS. I couldn't really establish breast feeding and DS just wouldn't attach. At one point I was hand expressing colostrum into a syringe for the midwives to give him. He was very sleepy and going 6-7 hours without waking and was also being sick a lot and getting quite jaundiced so he had to be seen by the neonatal team twice. He had two bottles of formula whilst I was in hospital with him because it was the only way of getting something into him.
When we bought him home and I was still struggling with feeding there were 2 separate occasions in the middle of the night (when DS was about 4-5 weeks) where I just hit breaking point because I couldn't get him to attach and he wouldn't stop screaming. I told my DH to go and make up a bottle (we had some formula in the kitchen as back up) but by the time DH would reappear with the bottle I'd have managed to get DS on the breast. So apart from those two occasions in hospital he has been exclusively breast fed.
It sounds like you have been through a tough time with your baby, it must have been very scary for you when she was born. I'm glad you are both ok though!! If it took my DS 35 minutes to attach I think I would be going down the exact same route you are, it's amazing you have persevered so much!!!