Welcome!
These are strong scores, especially in language. I'm guessing there are some comparably strong subtest scores outside of language, to generate a FSIQ that's a bit higher than you might expect from the other index scores.
In answer to your specific questions: yes, these would be consistent with intellectual giftedness. High cognition alone is not sufficient to cause difficulties in preschool, but it would certainly be unsurprising if they were a significant contributor. Scores at this age are not considered to be stable over a lifetime--but they do tell you something about what her intellectual/academic needs are at this time. And though they may change in a few years, either up or down, they are unlikely to plummet to the average range.
The question of appropriate placement is more complex, and depends on many factors beyond her IQ, especially as preschool and kindergarten are not principally about academics.
