mumofmoos we have similar children! DD at 15 months still won't take milk out of a cup, bottle or other (my milk, cows, or soya). She likes 'bubba' (booby) too much!!
aliphil really try not to worry too much about what other people are doing in their routines. Babies don't always like routines. You just have clever people (Super nanny, Gina F) who have made a lot of money out of tired mothers and fathers selling the idea that 'get them in a routine and all will be better'... It's crap! Some babies relish a routine and some babies don't- it isnt a 'one size fits all'. So only put your dd in a routine if you want to, not for any other reason. Or find something that works for you and go with that instead.
At 3 months, she may fit in to a rough pattern or routine soon enough but don't worry if she doesn't immediately.
I think you did the right thing by bringing her back downstairs tonight 
Also dont worry about feeding to sleep either at this age- I did this and people said dd would never "learn". She did eventually, she just wanted her mum to be with her when she fell asleep. Absolutely nothing wrong with that! Sometimes even now, she'll go to sleep whilst feeding, other times she pushes me away and clearly wants her own space and bed. I'm ok with that as it works for our family; this might not work for you and that's ok too.
This is a good attachment parenting website with loads of info on sleep during the first few months/years
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As you can tell, I'm not a 'gina ford' type person, I'm more about attachment parenting (something I hadn't come across until dd was about 6 months old but was doing most of the things that go hand in hand with AP like breastfeeding, using a sling, not leaving to cry it out, co sleeping). Read up on it, it might help 