@Alicia KulurisI know I'll get slammed for even mentioning this but what about an arbitrage arrangement?

Ultimately, clarify with each broker upfront about your intentions to avoid misunderstandings and ensure they’re comfortable with the arrangement.

As a listing agent, I pre-arrange a specific weekly or biweekly time window with existing tenants and arrange all showings within that timeframe, with POF/pre-approval required with offers.

He is an investor, STR property manager, helps with staging and also is a realtor as well!

The elephant in the room is fact that all this fkry played out in US today, is coming at the cost of loosing confidence on world stage for USD, loosing confidence in US economic system, loosing confidence in the US as a whole.     

I offered tickets to XCARET and received commissions for arranging rental cars for my clients.

Just be 💯 certain that you'll be able to refi that HELOC debt off when the time comes.However...At this stage in your investment career, I would URGE you not to sign up for negative cashflow in the hope that "the market" will save you.

But you can arrange to get paid in the interim. 

I would also suggest giving her a heads-up that there will be an increase at the time of her lease renewal.This will give her ample time to consider her options and make any necessary arrangements.

Obviously, that arrangement would have to be worked out with the tenant in order to provide them a heads-up notice.