You can use another roller, but just remember that any special paint, like her metallic paint, is going to have a learning curve. It is best to test a 2 foot by 2 foot section and be sure it looks like you want it to before doing the entire area (if you are doing a room).Make sure you start with a slightly damp roller, followed by keeping the roller fully loaded at all times. The most common problem with specialty paint is the tendency to want to get the utmost coverage out of a moderately pricey product. So, along with keeping the roller wet, remember to do the initial coat using a "W" pattern, followed by a final smooth down from top to bottom. This should solve the roller marks as much as they can be solved - whether using her specialty roller or not.
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