I saw this from globalnews.ca:
Molly Johnson on the album she’s always wanted to make
When referring to google ngram, I get 3 possible combinations of she's:She 's
So my question is should she has be contracted as she 's in the above example like in the examples found from google ngram to avoid confusion? Google ngram hasn't been exactly consistent about this, sometimes using she 's to refer to she is and she has.
Coming across the usage such as that from globalnews.ca does not look right to me and it wasn't until today I found out the she's means both she is and she has-- modern usages follow this pattern too. So as grammarians do you think the contracted form of she has should be she 's?
More importantly, are there rules for contracting words? Say, if I wanted to express She was as a contraction could it also be she 's or she's:
*Although is and was are both be verbs, both have tenses relating to different time periods - the present and past.