Should I upgrade my 5* squirrel girl?

I just pulled a 5* squirrel girl from a legendary crystal and wanted to know if I should rank her up. Skill is my most lacking class currently and my only good opinion is my 4* gwenpool. If you suggest ranking her up I would also be great to know how far. Thanks. Here’s my roster for reference.




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Comments
Focus on the Gwenpool for skill