[quote=@BrokenPromise]
I was thinking permanent. It seemed like you planned on having the magical girls grow in strength over time, and I thought that tied in nicely with the tiger stripped tabby's many lives containing skills from all walks of life. 
[/quote]

That was my intention yes. In that case, that's fine by me. Honing out how she acquires new abilities can be a plot point worked through IC via the Grand Ministry.