<prompt> Human: My mother was in the military, and is supposed to be receiving a decent sum of money from disability. Something around 40-50k. One of the things shes looking into is possibly purchasing a house across the street that is selling for 30-40k. Its nothing too fancy obviously because of the price. Its a 3bed,2bath home built in 66 with 1000 square feet. Last sold in 2006 for 133,000. Every house in the neighborhood has dropped in price by a decent amt.She wants to purchase it as a house for memy sister when shes older to live in while we are students. Worst case scenario, she could rent it out to some people. The thing is, shes has a mortgage on our current house and still owes nearly 80k. Im not sure about her retirement, but shes currently working at the Department of Defense, and is ex military.Part of me wants to think this is a decent idea considering the house isnt too far from a big university, but part of me thinking blowing a big check on a house when you already own one isnt ideal. She isnt the type of person to save money really, and I think if she doesnt do this, it will end up being spent on a nice TV, new furniture everywhere, etc.Any feedback on the situation, overall does it seem a little not ideal for a lack of a better term? Itd be cool to have a place to stay outside of our current house, but I cant help but thinking Id feel guilty because its not really a good financial decision.  <response>: If she has any other debts, pay those first. Put the leftovers on the current mortgage.Real Estate investing is not one of those thing you want to enter on a whim. 