Sharpay (original app) is being canon updated from the summer after High School Musical 3: Senior Year to shortly after Sharpay's Fabulous Adventure. With this come a few personality changes!
Having finally been played and used herself, Sharpay is no longer willing to use people to feel better about herself, or to lose herself in feeding people's self esteem. Her own self esteem seems to have had a boost, noted by her boyfriend Peyton as her being a "hot pink whirlwind of and ambition", yet for the first time Sharpay was seen to succumb to stage fright, confessing she was scared within seconds of receiving a starring role on Broadway: It's everything she ever dreamed of, and now that it's reality instead of just a dream, it's a lot of pressure. However, when the time comes to premiere in this role, Sharpay pulls off the opening number flawlessly (and presumably the rest of the show, though it's not shown).
Even beyond not actively using them, she cares more about other people, believing "disappoint[ing] someone I care about" to be the worst thing she did in this film. To this end she is now more determined to keep her promises to her friends and loved ones, and (headcanon) tries to keep an eye on her own limits so that she doesn't take on too much and end up having to let someone down, as she's realized she doesn't enjoy it.
Sharpay also seems much more interested now in fighting fairly, ashamed of her having "sacrificed integrity for opportunity". She now has the grace to realize when she's fighting the wrong battles and team up with former rivals to "work against a common enemy", and her willingness to be "manipulative, but for a good cause" seems to be the one exception to her new refusal to use people (this manipulation is to expose another person's ill treatment of those around them).
Finally, Sharpay is more determined to keep an eye on what's important to her: "A fair fight. A lifetime in the spotlight." And now that she's gotten a taste of the spotlight, she'll be wanting to get back to it.
Sharpay Evans | High School Musical | CANON UPDATE
Having finally been played and used herself, Sharpay is no longer willing to use people to feel better about herself, or to lose herself in feeding people's self esteem. Her own self esteem seems to have had a boost, noted by her boyfriend Peyton as her being a "hot pink whirlwind of and ambition", yet for the first time Sharpay was seen to succumb to stage fright, confessing she was scared within seconds of receiving a starring role on Broadway: It's everything she ever dreamed of, and now that it's reality instead of just a dream, it's a lot of pressure. However, when the time comes to premiere in this role, Sharpay pulls off the opening number flawlessly (and presumably the rest of the show, though it's not shown).
Even beyond not actively using them, she cares more about other people, believing "disappoint[ing] someone I care about" to be the worst thing she did in this film. To this end she is now more determined to keep her promises to her friends and loved ones, and (headcanon) tries to keep an eye on her own limits so that she doesn't take on too much and end up having to let someone down, as she's realized she doesn't enjoy it.
Sharpay also seems much more interested now in fighting fairly, ashamed of her having "sacrificed integrity for opportunity". She now has the grace to realize when she's fighting the wrong battles and team up with former rivals to "work against a common enemy", and her willingness to be "manipulative, but for a good cause" seems to be the one exception to her new refusal to use people (this manipulation is to expose another person's ill treatment of those around them).
Finally, Sharpay is more determined to keep an eye on what's important to her: "A fair fight. A lifetime in the spotlight." And now that she's gotten a taste of the spotlight, she'll be wanting to get back to it.