This is to prevent someone from piercing the veil to ultimately bypass the LLC and sue you personally.

Lots of opportunities to stop and prevent it. 

Reach out to agencies in your area (housing commission, Saint Vincent DePaul, etc.) explain the situation and ask them who provides eviction prevention assistance to renters.

Oh, let me count the reasons, stark and clear,Why in the Rockies, dreams might disappear.Firstly, time's dance, a tango unforeseen,Delays and setbacks, patience in between.Secondly, budgets shift in mountain air,A treacherous venture, costs rise with care.Like winds that howl, a financial plight,Draining pockets in the mountain's height.Thirdly, expertise, a crucial call,A craft refined to prevent the fall.In rocky realms, build cautiously,For seasoned skill shall guide to victory.Oh, let me count the ways, with wisdom's might,To pause the dream, build in clearer light.Where were you CountTheWaysGPT when I needed you?

Reason being for it is that insurance companies are getting tighter and tighter, and having a claim on your home can prevent you from getting further policies in the future and subject to much higher rates. 

It is your responsibility to change the air filter to prevent this from occurring (see Lease, page 3, paragraph 2). 

Owner preventative maintenance.

Forming an LLC in a specific state believing you will be better protected is not true and will not prevent claims from arising.Understand insurance and make sure you have the appropriate types of insurance depending on the investment opportunity you are pursuing whether it be land, a construction project, a tenant occupied property etc..

Who was I to stand in their way and try to prevent them leaving or enforce the terms of the lease?

If there are potential consequences that will prevent her from making $ off of the other agents/assoc. brokers, she'll sign.All the best!