Is it wrong to buy a house my mother got denied for?

[Jorge Morales]

My brother/agent flipped a house and it looks great. After running some numbers I think it would be a great investment. The only problem is my mother was in the process of buying it and unfortunately a week before closing the bank denied her. Now my brother/agent asked if I was interested  and I am but I feel as if that could rub my mother the wrong way since a would buy the house she wanted and rented it out to somebody else, especially since she has been living in the bad side of the city . I would love to buy it for her but then it would not be a great investment. Unfortunately I don’t have enough of a portfolio where this would actually work.