Some ideas I've considered:Equity Buyout: Having another investor or my partner buy out my 40% equity.Seller Financing: Selling my equity and offering seller financing to the buyer.Selling the Property: Liquidating the property entirely and splitting the proceeds.Does anyone have experience with situations like this?

I suggest listening to the BP podcasts and reading through the blogs and books they offer.

Double check financing before making an offer.

When I asked my agent about options to back out, he didn’t really offer any advice.

I made a relatively low offer and after one negotiation we settled on a price that was about 45% lower than the original list price.

great advice provided - what I will add to this is if you have smokers and its not allowed I would offer to allow them out of the lease with no penalty. 

Why can't you offer her assistance while she trains you, so you both make money?

The home was on the market for over 200 days, the builder offered 15,000 discount.

I now also offer limited service where I do the guest communications, marketing, and pricing. 

Because you're new, it is a good idea to ask about the brokerage's agent training offerings and potential teams to join to get experience.