small-time landlord here. While I'm happy to overlook small mistakes and short delays, it's pretty easy to see through bullshit like that. People with budget problems make up such excuses. This might work once, but not twice.

A few days late is not really that big of a deal with a big corporate landlord, usually. It's down to their policy. Everyone likes tenants that don't cause problems and pay their rent reliably. OP is still appreciated as a customer if she pays rent four days late once...