My x and I had two, so I've been there !!! the idea of the mother's scent is true, and if the mother is nervous with the baby, and fretfull, yelling, claims she cannot do anything with it, you can expect the baby to be upset. The poor little baby needs security and a calm invironment, with calm affectionate touching, holding, calm talking. you cannot expect if its in and around turmoil all day for it to calm down for you this early in its life. The only thing I can suggest is that you and the mother have to decide, is she going to be with you every night, or 5 days or nights a week whatever you decide, it has to be consistent. the baby will be upset each time its program is changed. So if your going to take care of her nights try the shirt idea with mothers scent, feed the baby, change her and read to her in a rocker and gently rock back and forth, speak soothingly to her then put her to bed with the mothers scented clothing. Your going to have to let her cry herself to sleep several times. She won't die from crying LOL !!! ( babies are smart, and learn quick how to get attention, so if you reasonably know she's got no reason to cry, ignore it and let her cry until she falls asleep, if she gets attention for every cry, she's going to cry for attention) after a few nights she will get used to your routine, she will wake up hungry or wet at that age, so your going to have to put up with some of that. It does get better, but whatever you and the mother decide, it has to be consistent or the baby will be upset with every change. Consistence is key. Can you put her in a room next to where you sleep rather than in the same room? Your a great guy to take this on !!! you have to realize though, that if when with the mother, she's treated poorly, and around constant confusion that you cannot correct the damage done in the few hours you have her. So if your willing to commit, you'll have to commit to some timeframe thats consistent and frequent, or your in a losing battle to undo damage from the mother's home environment during short and infrequent stays at your place. I hope this common sense stuff makes sense to you LOL !!! and sorry for repeating the consistency theme, but it is of utmost importance and cannot be stressed enough. The best of luck !!!