4 month old...sleep help???

All your answers so far have been good. My son, who is now 3 years, was very much the same. All i can suggest as well is if she wont settle pick her up, dont turn lights on, dont talk to her or anything. Just hold her and she if she goes back down, but also at her last feed wrap her up and make sure all her wind is out. Make a difference between day sleeps and night sleeps. Tonight you sleep with one of her blankets and tomorrow have it on you then tomorrow night put it under her head, try giving her a bath then before you feed her at the last feed give her a mage to relax her. She may grow out of it but my little son would wake up and wanna play, then if nothing works just pick her up like i said earlier dont turn on lights or anything and put her in her bouncer, if you wanna put a lamp on in a different room so there is a dim light thats ok then lay down on the couch with her in a bouncer and just go back to sleep, dont talk to her or smile. just put her down and you lay down. She'll get the idea that your not going to respnod to her at night