There was a change recently, a few years ago now at least, where transfer to Title to a LLC of your own is okay. 

@Cesar GarciaI highly recommend getting a property manager 1) Your PM would be the coordinate with your agent on how they can get the keys from the listing agent/ seller.

Is it better to evict her or send “Good Cause to terminate the lease" to the tenant (and a copy to section 8) and have section 8 transfer her to another rental?

I'm curious to try them out for at least one owner occupied client transaction to see how they work at transferring the loan, forms they file, required contract wording, etc. 

The transfer of title could trigger negative covenants in the loan (eg: Due on Sale Clause).

Hello everyone, I am looking for advice on the best way for my mother to transfer the property to my name.

Also, for the second part of the strategy, we would transfer the duplex into our real estate property investment LLC after year 1 and have my sister move back into the single-family house as her primary and rent out both units in the duplex as short/mid-term rentals.

However, a loan officer suggested getting a vacation home loan, then transferring the property to an LLC.

Secure the property, transfer utilities to prevent any freeze damage and then file an FED action.  

That permits you to easily transfer the bills if the unit becomes vacant and monitor that each tenant is actually paying the bills and keeping the property in working order so to speak.