Then they re-painted and a few other small maintenance issues, and re-rented for market rent, which Section 8 allowed.

She is asking to repaint the walls in the living area and bedrooms.

Repaint any affected areas, starting with Kilz.

She had a bunch of pets she wasn't supposed to have, and the whole place had to be re-carpeted and repainted.

A tree fell on our house after we owned it for 6 months and completely destroyed everything BUT the kitchen (which we repainted the cabinets white and got new appliances anyway so it looked fairly updated).  6 months later, we got to move into it again and a year or 2 later, foreclosure since the housing market was bad and we moved to a new state.  

It can involve repainting, replacing blinds and carpets, filters.

IF it is between a duplex to 10 units, a single unit that needs more extensive repairs (e.g. repaint, new appliances, new carpeting) can blow the budget very quickly.

The tenant didn't vandalize the house, but he was filthy and it needed to be completely repainted, exterminated, cleaned, and landscaped.

we have done spot or certain room repainting, but typically save the whole house repaint for between tenants time. 

Safe bet is to get an idea of the typical lease term that you see with properties like this (1-year, 2-year, 3- year, etc) and then assume you're going to need time between tenants to make repairs (there's always damage), repaint, rehab, clean, & re-rent.