If they never paid rent, and were basically your guests, they may be considered "licensees," rather than tenants. If so, you would not need to...

Landlord served UD for no reason

I'm sorry you are experiencing this. If you win, you may be able to sue for malicious prosecution, and also have remedies under Civil Code...

Is there anything I can do. Can I file a motion or what else can I do?

You need to file a motion under Code of Civil Procedure Section 473 to set aside default and (if it has also been entered) default judgment....

What are her options at this point>

If your girlfriend was personally served with an unlawful detainer summons and complaint, she would normally have 5 days to respond. If she does...

Can I take legal action against my neighbor for their reckless behavior or the apartment for allowing for a dangerous situation.

I'm sorry that you and your child experienced this, but am glad that no one was physically injured. You might try making a police report, but if...

Can this be considered Harassment?

I'm sorry you are experiencing this. You seem to have done some research on your own, and may well know that you have potential claims for...

Will the prior tenant agreement mean for me and what will happen to the previous lease arrangement?

I echo Mr. Moss' sound advice. It would still be prudent to formally and lawfully terminate the tenancy of the mobile home folks. I strongly...

What rights/options do they have? How can the apt complex not assistance them

Unless the building owners/management are somehow legally responsible for the fire (e.g. if it occurred because of their negligence), they would...

Is there a limit on the penalty a landlord can charge for breaking a lease?

California law generally prohibits contractual penalties in residential rental agreements - see Orozco v. Casimoro (2004) 121 Cal.App.4th Supp....

Is this legal? Is this discrimination? Do they have to pay relocation costs to us?

I'm sorry you find yourself in this situation. If the condo conversion plans were pending, and were not disclosed, there is an argument that...