Technically Frozen was her movie as she was the Protagonist of the film. Elsa is the Deuteragonist and the rest are the supporting cast. However while she might of been the protagonist of the film (with her magic power being her heart) Elsa gets the most attention from many due to her having the hit song and magical powers that attract others (like Marvel superheroes with super abilities will get more billing then Hawkeye or other normal but skilled and smart heroes). Olaf due to the nature that a good comic side relief if done right is also very marketable and a merchandise seller (the teasers and some commercials didn't even focus on the sisters but Olaf) as well leaves unfortunate Anna to be the third place merchandise driven hero of the film that she is the protagonist of. With no magical powers she doesn't stand out to the "wonder and power" that is her sister Elsa (who also has a magical makeover in the film).It's alot like The Lion King. Simba is the main character but the merchandise love to sell his younger cuter form but most of all while Simba was the main hero it was Timon and Pumba that was the merchandise sellers and went to have their own show. In the cartoon called "the House of Mouse" Master of Ceremonies Mickey Mouse comments that the club had some very special guest tonight from the Lion King and it was Timon and Pumbaa. The thing was while Timon and Pumbaa was at the club Simba is right there next to them as well and he complains about Timon and Pumbaa's popularity, saying "Those guys always get all the attention!". TVTropes has a trope called "Spotlight-Stealing Squad" that fits this common occurrence.Frozen 2 is in the works (with a planned date being 4 years from now as they want to make sure it is a worthy sequel and they want to focus on story and having a great deal of time for animation, testing, and changes when needed). Perhaps that might help both Elsa and Anna. The creators have said that they planed for Anna dn Elsa to remain the primary protagonists and Elsa to showcase her fun and mischievous side that couldn't come out due to be trapped in fear for her life but thanks to Anna she can now explore and have fun and display her fun side that has long been trapped. A sample of the fun side was found in Frozen Fever and the creators want to display and show more of that. That Elsa after keeping herself at a distance from Anna now wants to make up for the lost time and the creators have said that while the two are opposites upon first glimpse in the overall run those that know the two very well will know how very much alike the two are also.In order for Anna to truly have more attention and "presence" for others Anna herself would have to showcase powers (snow, ice, fire, nature, darkness, even being or transformed into other mystical creatures such as vampire, werewolf, fairy, mermaid, ect) and a magical makeover but the thing is trying to make a worthy squeal that is also not a rehash of the first film so they might not do that unless they have some creative and great ideas that can go with it.I personally love seeing Anna with powers or other transformations or mystical links that I've collected a few artworks and stories from here and from other sites as I enjoy them greatly moreso then other Frozen related tales.