Breastfeeding

Q: My wife and I cannot have children however we are considering "adoption" but in the sense of fostering, i.e. ensuring that the child would not take our name and would know of his or her lineage. How I would do that, Allah grant me hikmah and make it easy.

I understand the legal issues around breast-feeding and the mahram status it provides to adoptive muslim "parents". Would this status still apply if my wife were to induce (by means of taking medication) the production of breast milk in her body? That is to say, the breast milk would not be produced by means of a child being born to my wife, but rather due to taking a pill to cause it to breast feed another child. We are both Hanafi.

I understand that this too is a modern phenomena, ie, inducing by means of medication the production of breast milk. Being a modern phenomena, there could probably be ikhtilaaf on this matter. I would like to now what is your opinion on this matter and with great respect, ask you to please explain the proofs for arriving at that opinion. Also if there is another opinion held by other ulema, could you possibly inform me of that opinion and also the proofs they may have.  

Q: I have a question about whether it would be allowed for a Muslim to donate breast milk for use by babies. Secondly would it be allowed for a Muslim mom to allow her baby to use donated breast milk on a newborn infant.

Background information: bottle feeding is both expensive +\- minus R400 per month and needs to be sterilized. For the poor person who is unable to breast feed, mom who's dead or too ill this could lead to serious illness in the child. For instance over diluting to save money would lead to malnourishment. Or people without access to electricity may not heat the bottles leading to child getting severe infections.

Q: According to Quran majeed how long a mother can breastfeed to her son and daughter?