Is your daughter sharing her bed? Sharing clothing? Closet space? Using her hair brush? Coats hanging side by side touching? Do they share towels? Does the dorm have a joint shower with general towels like a gym? Where you use them then put them in a bin to go to a central laundry? If that's the way they do it then the RA has to do something.
By the way, how, exactly, does she know her room mate has head lice? I have an itchy scalp. My mom had one too. I can itch and itch and itch until I draw blood. I am using Dove shampoo and conditioner now and it's very nearly itch free. But there have been times I'd be clawing my head and not even realize I was doing it.
Then there is little chance of your daughter getting it. You do understand that lice are very slow moving sedentary critters right? They don't jump, the don't fly, they don't do much except lay eggs and die in a few weeks.
At least this means the room mate is a clean person, lice do not live on dirty people, they can't lay their eggs in dirty hair...
Now if she's filthy and has them in her nether region it's body lice and not head lice...that's a totally different issue, sharing a toilet.
So again, how is she so sure the girl has lice?
I'd say to fix the issue and make it where she won't get them she needs to get a small, 6 or 8 ounce spray bottle. Put some water in it then add a few drops of Tea Tree Oil in it. Shake it well then mist her hair each morning to dampen it for styling. This serves 2 purposes. The lice don't like the smell of the oil and they will not get on her hair. It also makes the hair have a thin coating of oil on it so they won't get on it because they can't grasp it or lay their eggs onto the shaft.
Don't make her hair oily but just a super thin spritz on it.
I really would talk to the person in charge of room assignment and request a different room. I'd ask an attorney if this would be grounds for any sort of lawsuit should you choose to stop paying her housing costs unless they move her.
If they get along I would see no reason for her to move.
People get so worked up over head lice. It's not an air borne illness and it takes a lot of close long term physical contact for them to crawl from one person's hair to the other person's hair. They have to be on a garment she's sharing, in a hair brush, laying on her pillow or in her sheets, etc...for them to get on her.
headlice.org has good honest down to earth information.