It's really not fair to make me promise to keep up for once and then post so much in less than 24 hours, people. Nonetheless, I shall forge on:
Kiwi, my daughter is sort of like yours too. No stranger anxiety, eats like a horse, flirts like crazy, we still breastfeed, woe betide me if I don't tend to her desires immediately, and if I'm in the vicinity, noone but Mum will do. She cries if I look in the wrong direction, sometimes. Yours sounds a bit harder than mine - and I'm at work 4 days a week which lessens the strain a bit - but still.
And mine started crawling at nine months, and only this last week (so coming up to 16 months) has she started walking regulsrly. I think it's improving her mood! If yours has got worse recently, I wonder if she's on the verge of walking too? Mine always gets harder just before a developmental leap.
Also, re: breastfeeding, we only do it at night now, and sometimes she's okay with that sometimes not. When she's not okay with that, I hand her off to her Dad with a bottle of milk and she settles right down. She's a lot easier for him generally, actually - sleeps better, accepts milk bottles, etc - but she prefers me. No wonder, since I'm clearly a sucker!
And lastly on cow's milk: we tried goat's milk to avoid skin rashes, which helped, but what's helped more is lactose free full fat cow's milk, which I can get in the supermarket. I'm in Australia, I'd be surprised if you can't get it there too.