We've tried everything, and due to her credit history, she can't find anything affordable. 

Is there somewhere I can report her payments to to help her credit score?

I'm reluctant to do a refi since I have great rates locked in and I'm not 100% sure when I will need access to the credit lines from the HELOC, plus I'd rather avoid increasing my payments until I need the money.

Got motivated by reading "Rich Dad Poor Dad" and "Cashflow Quadrant," and I have a decent amount of capital to get going. 

Even borrowing from a Hard money loner would still affect my ability to get a personal mortgage since they will pull my credit.

I came to USA in 2014 with just $400 and joined a 2 year Master's in Computer Science Program in NJIT,i completed this in just 10 months.While doing masters i started reading books related to financial freedom.My first book Rich Dad Poor Dad as most of the people's beginners guide.i moved to florida in 09/29/ 2016 and i closed my first property in 09/29/ 2017 which leads to financial security which means total expenses=total passive income.I am closing second one 5/7/2018 which will bring in extra 800 in passive income.About Properties: First is Condominium for 120000 , 3 bd 2 bath, i do AirBnB in one room, stay in one and rent the other to my friend.This will bring in 400-750 in passive income.Second one is near Downtown Orlando for 230000, which is worth 265000 as per appraisal. i will be renting the rooms as this property is having 3 Bd 2 Ba and 1 Studio Apartment which will bring me from 600-1000 in passive.My Goal is to reach 10000 in passive income, Please guide me how to reach this destination as many of you reached.i am improving myself and these are the action list1) Reading books related to Real Estate (One house at a time, Buy houses with No Money Down by Brandon Turner, Millionaire Next Door.2) This Discussion to reach as many amazing people and achievers as possible.My Questions1) How to buy next homes ?

I came to USA in 2014 with just $400 and joined a 2 year Master's in Computer Science Program in NJIT,i completed this in just 10 months.While doing masters i started reading books related to financial freedom.My first book Rich Dad Poor Dad as most of the people's beginners guide.i moved to florida in 09/29/ 2016 and i closed my first property in 09/29/ 2017 which leads to financial security which means total expenses=total passive income.I am closing second one 5/7/2018 which will bring in extra 800 in passive income.About Properties: First is Condominium for 120000 , 3 bd 2 bath, i do AirBnB in one room, stay in one and rent the other to my friend.This will bring in 400-750 in passive income.Second one is near Downtown Orlando for 230000, which is worth 265000 as per appraisal. i will be renting the rooms as this property is having 3 Bd 2 Ba and 1 Studio Apartment which will bring me from 600-1000 in passive.My Goal is to reach 10000 in passive income, Please guide me how to reach this destination as many of you reached.i am improving myself and these are the action list1) Reading books related to Real Estate (One house at a time, Buy houses with No Money Down by Brandon Turner, Millionaire Next Door.2) This Discussion to reach as many amazing people and achievers as possible.My Questions1) How to buy next homes ?

After many podcasts and books (Rich Dad Poor Dad, Richest Man in Babylon, Set For Life, Book on Managing Rental Properties, Millionaire Real Estate Investor, 4 Hour Work Week and a few more) I went ahead with the heloc and started looking for my first true investment property. 

I hope this isn’t a dumb question, but when comparing rates and terms for HELOCs from different banks, is it possible to provide my income/current expenses/credit score or SSN to run a credit check and estimated home value to different banks and get a good faith estimate of what the rate would be without having to apply first, since, from what I understand, I can’t apply at more than one bank at a time because it would be considered mortgage fraud.

I have a house which I bought on a line of credit (low interest rate, but tied to LIBOR).