Stressssed mom needs answers to several q's from experienced moms. LONG.?

my sister has an 118 mo old who says please and thank you and many of the same words as yours- you really need a plan and to stick to it. ALWAYS tell her to say please before giving her something and ALWAYS tell her to say thank you. now my niece at first would just make a small squeaking sound, but it was a distinct difference from her normal sound-after a while she'll pick up on how to say them. you need to make sure to spend your free time playing with her so that she is developing and learning instead of just sitting in front of the tv all day but find things she likes...as far as her sleeping, try a special blanket or a large stuffed animal so she feels like there is someone with her when she sleeps. often they feel alone at Night and so having a large animal to snuggle with gives them company. now milk at night isn't a problem right now to put her to sleep but you should try to wein her.