I'm so sorry your doctors went that route with the jaundice. What a bummer. Simple ways to find out how much baby is getting...
Definite pro. Personalized antibodies JUST for mom and baby pair. What mom is exposed to, she makes antibodies to, and passes them along. Changes sugar/protein/fat content as baby needs it. Increases in fat as baby gets older, as they nurse less (my son did not get that memo, but many do) and need longer-burning milk. Perfect food for them. Always a good temperature. etc etc.
I nursed until I was 4, I have environmental allergies (which I put down to being fed some sort of junk from a spoon at 2 months old), I have had all sorts of problems...most of which started as I turned 4 and was forcibly weaned b/c my mom had to go to work. All I have to say is...thank goodness I got those 4 years, who knows what my health would have been like (in the dumpster, I bet) without it. When one first knows me, it's not that obvious what the benefits were for me, but thinking about if I had NOT gotten all the specialized antibodies etc etc...it's scary to think about.
And of course the formula industry says it right there...breast is best. They are just continuing to work to imitate something they'll never get right (especially since mama's milk changes every nursing session, even during a nursing session, and a can of stuff can't do that).
If for some reason baby mama pair can't get it, then pump. Woman I know from mothering.com had problems galore, with an ultimate diagnosis of "bubble palate" for baby...couldnl't nurse. So she pumped for EVERY SINGLE nursing session baby needed until baby was 2. I'm not even sure I would have that strength without knowing it could be done (I hated pumping and had to do all sorts of mental tricks to get milk, which I was trying to do "just in case" and also for a friend's triplets after she asked me to pump for her), but since she did it, I know I'd strive to do it if necessary!
Oatmeal, granola bars, oatmeal cookies, Guinness (or in my case a microbrew "blonde" beer even caused serious overflow), water until you can't drink more water... There are herbal tinctures for more milk...
And lastly, if you don't have stuff to give baby a bottle, you're going to work much much much harder, and work on NOT getting frustrated, than you would if you had the stuff there.
Hope your friend can find some wise women with *experience* in successfully nursing her baby to gather round her and impart their wisdom! If you don't actually *remember* nursing (as I and my half sister, who went until she was 5, do), it's absolutely invaluable!