How do I get help with power of attorney documents in Alberta?

I can't afford a lawyer. My mom appointed me poa but my two brothers have hired a hot shot lawyer and had the poa removed from me to one of them for the time being i cannot afford a lawyer and need help with documents what do i do. i lived in her house which i looked after her in for the past seven years now they want to sell it saying there is not enough money to keep her in this expensive housing facility .Four years ago mom got a equity loan to fix up the house as nothing had been done to it for 40 years so i helped her with it . all the money went into her bank account . now berothers want to see every receipt for renovations ect... as they say i spent it on foolish things i do not have alot of the receipts because i really did not think it would come to this,they want me to move so they can sell the house they are now taking me to court and i am on assistance due to healthand cannot afford a lawyer what can i do